diff --git a/app/api/auth/[...nextauth]/route.ts b/app/api/auth/[...nextauth]/route.ts
new file mode 100644
index 0000000..fed932c
--- /dev/null
+++ b/app/api/auth/[...nextauth]/route.ts
@@ -0,0 +1,31 @@
+import NextAuth, { type NextAuthOptions } from "next-auth"
+import Credentials from "next-auth/providers/credentials"
+import { PrismaAdapter } from "@auth/prisma-adapter"
+import prisma from "@/lib/prisma"
+import { compare } from "bcryptjs"
+
+export const authOptions: NextAuthOptions = {
+  // Adapter from @auth works with next-auth v4 as well
+  adapter: PrismaAdapter(prisma) as any,
+  session: { strategy: "jwt" },
+  providers: [
+    Credentials({
+      name: "Credentials",
+      credentials: {
+        email: { label: "Email", type: "text" },
+        password: { label: "Password", type: "password" },
+      },
+      async authorize(credentials) {
+        if (!credentials?.email || !credentials?.password) return null
+        const user = await prisma.user.findUnique({ where: { email: credentials.email } })
+        if (!user || !user.password) return null
+        const ok = await compare(credentials.password, user.password)
+        if (!ok) return null
+        return { id: user.id, email: user.email, name: user.name ?? undefined }
+      },
+    }),
+  ],
+}
+
+const handler = NextAuth(authOptions)
+export { handler as GET, handler as POST }
diff --git a/app/api/signup/route.ts b/app/api/signup/route.ts
new file mode 100644
index 0000000..e55fa97
--- /dev/null
+++ b/app/api/signup/route.ts
@@ -0,0 +1,18 @@
+import { NextResponse } from "next/server"
+import prisma from "@/lib/prisma"
+import { hash } from "bcryptjs"
+
+export async function POST(req: Request) {
+  const body = await req.json().catch(() => null) as { email?: string; password?: string; name?: string } | null
+  if (!body?.email || !body?.password) return NextResponse.json({ error: "Missing fields" }, { status: 400 })
+
+  const existing = await prisma.user.findUnique({ where: { email: body.email } })
+  if (existing) return NextResponse.json({ error: "Email in use" }, { status: 409 })
+
+  const password = await hash(body.password, 10)
+  const user = await prisma.user.create({ data: { email: body.email, name: body.name ?? null, password } })
+
+  return NextResponse.json({ id: user.id, email: user.email })
+}
+
+
diff --git a/app/components/AuthPanel.tsx b/app/components/AuthPanel.tsx
new file mode 100644
index 0000000..4cf1712
--- /dev/null
+++ b/app/components/AuthPanel.tsx
@@ -0,0 +1,67 @@
+"use client"
+
+import { useState } from "react"
+import { signIn, signOut, useSession } from "next-auth/react"
+
+export default function AuthPanel() {
+  const { data: session } = useSession()
+  const [email, setEmail] = useState("")
+  const [password, setPassword] = useState("")
+  const [name, setName] = useState("")
+  const [loading, setLoading] = useState(false)
+  const [msg, setMsg] = useState("")
+
+  const doSignup = async () => {
+    setLoading(true)
+    setMsg("")
+    try {
+      const res = await fetch("/api/signup", {
+        method: "POST",
+        headers: { "Content-Type": "application/json" },
+        body: JSON.stringify({ email, password, name }),
+      })
+      if (!res.ok) {
+        const j = await res.json().catch(() => ({}))
+        throw new Error(j?.error || `HTTP ${res.status}`)
+      }
+      setMsg("Signed up. Now log in.")
+    } catch (e: any) {
+      setMsg(e?.message || "Failed")
+    } finally {
+      setLoading(false)
+    }
+  }
+
+  const doLogin = async () => {
+    setLoading(true)
+    setMsg("")
+    const res = await signIn("credentials", { email, password, redirect: false })
+    if (res?.error) setMsg(res.error)
+    setLoading(false)
+  }
+
+  if (session?.user) {
+    return (
+      <div className="border rounded p-4 space-y-2">
+        <div>Logged in as {session.user.email}</div>
+        <button className="border px-3 py-1" onClick={() => signOut()}>Logout</button>
+      </div>
+    )
+  }
+
+  return (
+    <div className="border rounded p-4 space-y-2">
+      <div className="text-sm opacity-70">Credentials auth (SQLite)</div>
+      <input className="border rounded px-2 py-1 w-full" placeholder="Name (optional)" value={name} onChange={(e) => setName(e.target.value)} />
+      <input className="border rounded px-2 py-1 w-full" placeholder="Email" value={email} onChange={(e) => setEmail(e.target.value)} />
+      <input className="border rounded px-2 py-1 w-full" placeholder="Password" type="password" value={password} onChange={(e) => setPassword(e.target.value)} />
+      <div className="flex gap-2">
+        <button className="border px-3 py-1" disabled={loading} onClick={doSignup}>Sign up</button>
+        <button className="border px-3 py-1" disabled={loading} onClick={doLogin}>Log in</button>
+      </div>
+      {msg && <div className="text-sm text-amber-600">{msg}</div>}
+    </div>
+  )
+}
+
+
diff --git a/app/components/WsDemo.tsx b/app/components/WsDemo.tsx
index 26d4114..b4859a7 100644
--- a/app/components/WsDemo.tsx
+++ b/app/components/WsDemo.tsx
@@ -1,7 +1,39 @@
 "use client"
 
+import EventEmitter from "events";
 import { useEffect, useRef, useState } from "react"
 
+class GameClient<State, Action> extends EventEmitter {
+  private state: State | null = null;
+  private status: 'connecting' | 'connected' | 'disconnected' = 'disconnected';
+  private ws: WebSocket | null = null;
+  private enabled = false;
+
+  constructor(private readonly id: string) {
+    super();
+  }
+
+  public setEnabled(enabled: boolean) {
+    this.enabled = enabled;
+  }
+
+
+}
+
+const delay = (ms: number) => new Promise(resolve => setTimeout(resolve, ms))
+
+/*function useGame<State, Action>() {
+  const [connected, setConnected] = useState(false)
+  const [state, setState] = useState<State | null>(null)
+
+  useEffect(() => {
+    let failures = 0;
+
+  }, []);
+
+  return { connected, state, pending, send }
+}*/
+
 export default function WsDemo() {
   const [connected, setConnected] = useState(false)
   const [messages, setMessages] = useState<string[]>([])
diff --git a/app/layout.tsx b/app/layout.tsx
index f7fa87e..aa9f3f1 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -1,6 +1,7 @@
 import type { Metadata } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
 import "./globals.css";
+import Providers from "./providers";
 
 const geistSans = Geist({
   variable: "--font-geist-sans",
@@ -27,7 +28,7 @@ export default function RootLayout({
       <body
         className={`${geistSans.variable} ${geistMono.variable} antialiased`}
       >
-        {children}
+        <Providers>{children}</Providers>
       </body>
     </html>
   );
diff --git a/app/page.tsx b/app/page.tsx
index 0e203e6..e379368 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -1,18 +1,12 @@
 import Image from "next/image";
 import WsDemo from "./components/WsDemo";
+import AuthPanel from "./components/AuthPanel";
 
 export default function Home() {
   return (
     <div className="font-sans grid grid-rows-[20px_1fr_20px] items-center justify-items-center min-h-screen p-8 pb-20 gap-16 sm:p-20">
       <main className="flex flex-col gap-[32px] row-start-2 items-center sm:items-start">
-        <Image
-          className="dark:invert"
-          src="/next.svg"
-          alt="Next.js logo"
-          width={180}
-          height={38}
-          priority
-        />
+        <AuthPanel />
         <WsDemo />
         <ol className="font-mono list-inside list-decimal text-sm/6 text-center sm:text-left">
           <li className="mb-2 tracking-[-.01em]">
diff --git a/app/providers.tsx b/app/providers.tsx
new file mode 100644
index 0000000..aa47308
--- /dev/null
+++ b/app/providers.tsx
@@ -0,0 +1,10 @@
+"use client"
+
+import { SessionProvider } from "next-auth/react"
+import type { ReactNode } from "react"
+
+export default function Providers({ children }: { children: ReactNode }) {
+  return <SessionProvider>{children}</SessionProvider>
+}
+
+
diff --git a/lib/prisma.ts b/lib/prisma.ts
new file mode 100644
index 0000000..a3567ec
--- /dev/null
+++ b/lib/prisma.ts
@@ -0,0 +1,11 @@
+import { PrismaClient } from "@prisma/client"
+
+const globalForPrisma = globalThis as unknown as { prisma?: PrismaClient }
+
+export const prisma = globalForPrisma.prisma ?? new PrismaClient()
+
+if (process.env.NODE_ENV !== "production") globalForPrisma.prisma = prisma
+
+export default prisma
+
+
diff --git a/package-lock.json b/package-lock.json
index 00b1481..f5b78ca 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -8,7 +8,11 @@
       "name": "mythic-bastionland",
       "version": "0.1.0",
       "dependencies": {
+        "@auth/prisma-adapter": "^2.11.0",
+        "@prisma/client": "^6.17.0",
+        "bcryptjs": "^3.0.2",
         "next": "^15.5.4",
+        "next-auth": "^4.24.11",
         "next-ws": "^2.1.3",
         "react": "19.1.0",
         "react-dom": "19.1.0",
@@ -21,6 +25,7 @@
         "@types/react": "^19",
         "@types/react-dom": "^19",
         "@types/ws": "^8.18.1",
+        "prisma": "^6.17.0",
         "tailwindcss": "^4",
         "typescript": "^5"
       }
@@ -38,6 +43,155 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/@auth/core": {
+      "version": "0.34.2",
+      "resolved": "https://registry.npmjs.org/@auth/core/-/core-0.34.2.tgz",
+      "integrity": "sha512-KywHKRgLiF3l7PLyL73fjLSIBe1YNcA6sMeew4yMP6cfCWGXZrkkXd32AjRi1hlJ9nvovUBGZHvbn+LijO6ZeQ==",
+      "license": "ISC",
+      "optional": true,
+      "peer": true,
+      "dependencies": {
+        "@panva/hkdf": "^1.1.1",
+        "@types/cookie": "0.6.0",
+        "cookie": "0.6.0",
+        "jose": "^5.1.3",
+        "oauth4webapi": "^2.10.4",
+        "preact": "10.11.3",
+        "preact-render-to-string": "5.2.3"
+      },
+      "peerDependencies": {
+        "@simplewebauthn/browser": "^9.0.1",
+        "@simplewebauthn/server": "^9.0.2",
+        "nodemailer": "^6.8.0"
+      },
+      "peerDependenciesMeta": {
+        "@simplewebauthn/browser": {
+          "optional": true
+        },
+        "@simplewebauthn/server": {
+          "optional": true
+        },
+        "nodemailer": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@auth/core/node_modules/cookie": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/cookie/-/cookie-0.6.0.tgz",
+      "integrity": "sha512-U71cyTamuh1CRNCfpGY6to28lxvNwPG4Guz/EVjgf3Jmzv0vlDp1atT9eS5dDjMYHucpHbWns6Lwf3BKz6svdw==",
+      "license": "MIT",
+      "optional": true,
+      "peer": true,
+      "engines": {
+        "node": ">= 0.6"
+      }
+    },
+    "node_modules/@auth/core/node_modules/jose": {
+      "version": "5.10.0",
+      "resolved": "https://registry.npmjs.org/jose/-/jose-5.10.0.tgz",
+      "integrity": "sha512-s+3Al/p9g32Iq+oqXxkW//7jk2Vig6FF1CFqzVXoTUXt2qz89YWbL+OwS17NFYEvxC35n0FKeGO2LGYSxeM2Gg==",
+      "license": "MIT",
+      "optional": true,
+      "peer": true,
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
+    "node_modules/@auth/core/node_modules/preact": {
+      "version": "10.11.3",
+      "resolved": "https://registry.npmjs.org/preact/-/preact-10.11.3.tgz",
+      "integrity": "sha512-eY93IVpod/zG3uMF22Unl8h9KkrcKIRs2EGar8hwLZZDU1lkjph303V9HZBwufh2s736U6VXuhD109LYqPoffg==",
+      "license": "MIT",
+      "optional": true,
+      "peer": true,
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/preact"
+      }
+    },
+    "node_modules/@auth/core/node_modules/preact-render-to-string": {
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-5.2.3.tgz",
+      "integrity": "sha512-aPDxUn5o3GhWdtJtW0svRC2SS/l8D9MAgo2+AWml+BhDImb27ALf04Q2d+AHqUUOc6RdSXFIBVa2gxzgMKgtZA==",
+      "license": "MIT",
+      "optional": true,
+      "peer": true,
+      "dependencies": {
+        "pretty-format": "^3.8.0"
+      },
+      "peerDependencies": {
+        "preact": ">=10"
+      }
+    },
+    "node_modules/@auth/prisma-adapter": {
+      "version": "2.11.0",
+      "resolved": "https://registry.npmjs.org/@auth/prisma-adapter/-/prisma-adapter-2.11.0.tgz",
+      "integrity": "sha512-gp1vpO7R7HxqQIDVFG4FXpjd9WsXg+vZsaqXOYyNCWugcx0scU2XNfhEiw3FnGyIaqRD4fexBf40LMJH8HmZ8A==",
+      "license": "ISC",
+      "dependencies": {
+        "@auth/core": "0.41.0"
+      },
+      "peerDependencies": {
+        "@prisma/client": ">=2.26.0 || >=3 || >=4 || >=5 || >=6"
+      }
+    },
+    "node_modules/@auth/prisma-adapter/node_modules/@auth/core": {
+      "version": "0.41.0",
+      "resolved": "https://registry.npmjs.org/@auth/core/-/core-0.41.0.tgz",
+      "integrity": "sha512-Wd7mHPQ/8zy6Qj7f4T46vg3aoor8fskJm6g2Zyj064oQ3+p0xNZXAV60ww0hY+MbTesfu29kK14Zk5d5JTazXQ==",
+      "license": "ISC",
+      "dependencies": {
+        "@panva/hkdf": "^1.2.1",
+        "jose": "^6.0.6",
+        "oauth4webapi": "^3.3.0",
+        "preact": "10.24.3",
+        "preact-render-to-string": "6.5.11"
+      },
+      "peerDependencies": {
+        "@simplewebauthn/browser": "^9.0.1",
+        "@simplewebauthn/server": "^9.0.2",
+        "nodemailer": "^6.8.0"
+      },
+      "peerDependenciesMeta": {
+        "@simplewebauthn/browser": {
+          "optional": true
+        },
+        "@simplewebauthn/server": {
+          "optional": true
+        },
+        "nodemailer": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@auth/prisma-adapter/node_modules/jose": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/jose/-/jose-6.1.0.tgz",
+      "integrity": "sha512-TTQJyoEoKcC1lscpVDCSsVgYzUDg/0Bt3WE//WiTPK6uOCQC2KZS4MpugbMWt/zyjkopgZoXhZuCi00gLudfUA==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
+    "node_modules/@auth/prisma-adapter/node_modules/oauth4webapi": {
+      "version": "3.8.2",
+      "resolved": "https://registry.npmjs.org/oauth4webapi/-/oauth4webapi-3.8.2.tgz",
+      "integrity": "sha512-FzZZ+bht5X0FKe7Mwz3DAVAmlH1BV5blSak/lHMBKz0/EBMhX6B10GlQYI51+oRp8ObJaX0g6pXrAxZh5s8rjw==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
+    "node_modules/@auth/prisma-adapter/node_modules/preact-render-to-string": {
+      "version": "6.5.11",
+      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-6.5.11.tgz",
+      "integrity": "sha512-ubnauqoGczeGISiOh6RjX0/cdaF8v/oDXIjO85XALCQjwQP+SB4RDXXtvZ6yTYSjG+PC1QRP2AhPgCEsM2EvUw==",
+      "license": "MIT",
+      "peerDependencies": {
+        "preact": ">=10"
+      }
+    },
     "node_modules/@babel/code-frame": {
       "version": "7.27.1",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.27.1.tgz",
@@ -555,6 +709,15 @@
         "@babel/core": "^7.0.0-0"
       }
     },
+    "node_modules/@babel/runtime": {
+      "version": "7.28.4",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.28.4.tgz",
+      "integrity": "sha512-Q/N6JNWvIvPnLDvjlE1OUBLPQHH6l3CltCEsHIujp45zQUSSh8K+gHnaEX45yAT1nyngnINhvWtzN+Nb9D8RAQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@babel/template": {
       "version": "7.27.2",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.27.2.tgz",
@@ -1393,6 +1556,107 @@
         "node": ">= 10"
       }
     },
+    "node_modules/@panva/hkdf": {
+      "version": "1.2.1",
+      "resolved": "https://registry.npmjs.org/@panva/hkdf/-/hkdf-1.2.1.tgz",
+      "integrity": "sha512-6oclG6Y3PiDFcoyk8srjLfVKyMfVCKJ27JwNPViuXziFpmdz+MZnZN/aKY0JGXgYuO/VghU0jcOAZgWXZ1Dmrw==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
+    "node_modules/@prisma/client": {
+      "version": "6.17.0",
+      "resolved": "https://registry.npmjs.org/@prisma/client/-/client-6.17.0.tgz",
+      "integrity": "sha512-b42mTLOdLEZ6e/igu8CLdccAUX9AwHknQQ1+pHOftnzDP2QoyZyFvcANqSLs5ockimFKJnV7Ljf+qrhNYf6oAg==",
+      "hasInstallScript": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=18.18"
+      },
+      "peerDependencies": {
+        "prisma": "*",
+        "typescript": ">=5.1.0"
+      },
+      "peerDependenciesMeta": {
+        "prisma": {
+          "optional": true
+        },
+        "typescript": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/@prisma/config": {
+      "version": "6.17.0",
+      "resolved": "https://registry.npmjs.org/@prisma/config/-/config-6.17.0.tgz",
+      "integrity": "sha512-k8tuChKpkO/Vj7ZEzaQMNflNGbaW4X0r8+PC+W2JaqVRdiS2+ORSv1SrDwNxsb8YyzIQJucXqLGZbgxD97ZhsQ==",
+      "devOptional": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "c12": "3.1.0",
+        "deepmerge-ts": "7.1.5",
+        "effect": "3.16.12",
+        "empathic": "2.0.0"
+      }
+    },
+    "node_modules/@prisma/debug": {
+      "version": "6.17.0",
+      "resolved": "https://registry.npmjs.org/@prisma/debug/-/debug-6.17.0.tgz",
+      "integrity": "sha512-eE2CB32nr1hRqyLVnOAVY6c//iSJ/PN+Yfoa/2sEzLGpORaCg61d+nvdAkYSh+6Y2B8L4BVyzkRMANLD6nnC2g==",
+      "devOptional": true,
+      "license": "Apache-2.0"
+    },
+    "node_modules/@prisma/engines": {
+      "version": "6.17.0",
+      "resolved": "https://registry.npmjs.org/@prisma/engines/-/engines-6.17.0.tgz",
+      "integrity": "sha512-XhE9v3hDQTNgCYMjogcCYKi7HCEkZf9WwTGuXy8cmY8JUijvU0ap4M7pGLx4pBblkp5EwUsYzw1YLtH7yi0GZw==",
+      "devOptional": true,
+      "hasInstallScript": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@prisma/debug": "6.17.0",
+        "@prisma/engines-version": "6.17.0-16.c0aafc03b8ef6cdced8654b9a817999e02457d6a",
+        "@prisma/fetch-engine": "6.17.0",
+        "@prisma/get-platform": "6.17.0"
+      }
+    },
+    "node_modules/@prisma/engines-version": {
+      "version": "6.17.0-16.c0aafc03b8ef6cdced8654b9a817999e02457d6a",
+      "resolved": "https://registry.npmjs.org/@prisma/engines-version/-/engines-version-6.17.0-16.c0aafc03b8ef6cdced8654b9a817999e02457d6a.tgz",
+      "integrity": "sha512-G0VU4uFDreATgTz4sh3dTtU2C+jn+J6c060ixavWZaUaSRZsNQhSPW26lbfez7GHzR02RGCdqs5UcSuGBC3yLw==",
+      "devOptional": true,
+      "license": "Apache-2.0"
+    },
+    "node_modules/@prisma/fetch-engine": {
+      "version": "6.17.0",
+      "resolved": "https://registry.npmjs.org/@prisma/fetch-engine/-/fetch-engine-6.17.0.tgz",
+      "integrity": "sha512-YSl5R3WIAPrmshYPkaaszOsBIWRAovOCHn3y7gkTNGG51LjYW4pi6PFNkGouW6CA06qeTjTbGrDRCgFjnmVWDg==",
+      "devOptional": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@prisma/debug": "6.17.0",
+        "@prisma/engines-version": "6.17.0-16.c0aafc03b8ef6cdced8654b9a817999e02457d6a",
+        "@prisma/get-platform": "6.17.0"
+      }
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+      "dependencies": {
+        "jose": "^4.15.9",
+        "lru-cache": "^6.0.0",
+        "object-hash": "^2.2.0",
+        "oidc-token-hash": "^5.0.3"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
+    "node_modules/openid-client/node_modules/lru-cache": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+      "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+      "license": "ISC",
+      "dependencies": {
+        "yallist": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/openid-client/node_modules/yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+      "license": "ISC"
+    },
     "node_modules/p-limit": {
       "version": "2.3.0",
       "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
@@ -2642,6 +3253,20 @@
         "node": ">=4"
       }
     },
+    "node_modules/pathe": {
+      "version": "2.0.3",
+      "resolved": "https://registry.npmjs.org/pathe/-/pathe-2.0.3.tgz",
+      "integrity": "sha512-WUjGcAqP1gQacoQe+OBJsFA7Ld4DyXuUIjZ5cc75cLHvJ7dtNsTugphxIADwspS+AraAUePCKrSVtPLFj/F88w==",
+      "devOptional": true,
+      "license": "MIT"
+    },
+    "node_modules/perfect-debounce": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/perfect-debounce/-/perfect-debounce-1.0.0.tgz",
+      "integrity": "sha512-xCy9V055GLEqoFaHoC1SoLIaLmWctgCUaBaWxDZ7/Zx4CTyX7cJQLJOok/orfjZAh9kEYpjJa4d0KcJmCbctZA==",
+      "devOptional": true,
+      "license": "MIT"
+    },
     "node_modules/picocolors": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
@@ -2690,6 +3315,18 @@
         "node": ">=6"
       }
     },
+    "node_modules/pkg-types": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/pkg-types/-/pkg-types-2.3.0.tgz",
+      "integrity": "sha512-SIqCzDRg0s9npO5XQ3tNZioRY1uK06lA41ynBC1YmFTmnY6FjUjVt6s4LoADmwoig1qqD0oK8h1p/8mlMx8Oig==",
+      "devOptional": true,
+      "license": "MIT",
+      "dependencies": {
+        "confbox": "^0.2.2",
+        "exsolve": "^1.0.7",
+        "pathe": "^2.0.3"
+      }
+    },
     "node_modules/postcss": {
       "version": "8.5.6",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
@@ -2719,6 +3356,88 @@
         "node": "^10 || ^12 || >=14"
       }
     },
+    "node_modules/preact": {
+      "version": "10.24.3",
+      "resolved": "https://registry.npmjs.org/preact/-/preact-10.24.3.tgz",
+      "integrity": "sha512-Z2dPnBnMUfyQfSQ+GBdsGa16hz35YmLmtTLhM169uW944hYL6xzTYkJjC07j+Wosz733pMWx0fgON3JNw1jJQA==",
+      "license": "MIT",
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/preact"
+      }
+    },
+    "node_modules/preact-render-to-string": {
+      "version": "5.2.6",
+      "resolved": "https://registry.npmjs.org/preact-render-to-string/-/preact-render-to-string-5.2.6.tgz",
+      "integrity": "sha512-JyhErpYOvBV1hEPwIxc/fHWXPfnEGdRKxc8gFdAZ7XV4tlzyzG847XAyEZqoDnynP88akM4eaHcSOzNcLWFguw==",
+      "license": "MIT",
+      "dependencies": {
+        "pretty-format": "^3.8.0"
+      },
+      "peerDependencies": {
+        "preact": ">=10"
+      }
+    },
+    "node_modules/pretty-format": {
+      "version": "3.8.0",
+      "resolved": "https://registry.npmjs.org/pretty-format/-/pretty-format-3.8.0.tgz",
+      "integrity": "sha512-WuxUnVtlWL1OfZFQFuqvnvs6MiAGk9UNsBostyBOB0Is9wb5uRESevA6rnl/rkksXaGX3GzZhPup5d6Vp1nFew==",
+      "license": "MIT"
+    },
+    "node_modules/prisma": {
+      "version": "6.17.0",
+      "resolved": "https://registry.npmjs.org/prisma/-/prisma-6.17.0.tgz",
+      "integrity": "sha512-rcvldz98r+2bVCs0MldQCBaaVJRCj9Ew4IqphLATF89OJcSzwRQpwnKXR+W2+2VjK7/o2x3ffu5+2N3Muu6Dbw==",
+      "devOptional": true,
+      "hasInstallScript": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@prisma/config": "6.17.0",
+        "@prisma/engines": "6.17.0"
+      },
+      "bin": {
+        "prisma": "build/index.js"
+      },
+      "engines": {
+        "node": ">=18.18"
+      },
+      "peerDependencies": {
+        "typescript": ">=5.1.0"
+      },
+      "peerDependenciesMeta": {
+        "typescript": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/pure-rand": {
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/pure-rand/-/pure-rand-6.1.0.tgz",
+      "integrity": "sha512-bVWawvoZoBYpp6yIoQtQXHZjmz35RSVHnUOTefl8Vcjr8snTPY1wnpSPMWekcFwbxI6gtmT7rSYPFvz71ldiOA==",
+      "devOptional": true,
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://github.com/sponsors/dubzzz"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/fast-check"
+        }
+      ],
+      "license": "MIT"
+    },
+    "node_modules/rc9": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/rc9/-/rc9-2.1.2.tgz",
+      "integrity": "sha512-btXCnMmRIBINM2LDZoEmOogIZU7Qe7zn4BpomSKZ/ykbLObuBdvG+mFq11DL6fjH1DRwHhrlgtYWG96bJiC7Cg==",
+      "devOptional": true,
+      "license": "MIT",
+      "dependencies": {
+        "defu": "^6.1.4",
+        "destr": "^2.0.3"
+      }
+    },
     "node_modules/react": {
       "version": "19.1.0",
       "resolved": "https://registry.npmjs.org/react/-/react-19.1.0.tgz",
@@ -2740,6 +3459,20 @@
         "react": "^19.1.0"
       }
     },
+    "node_modules/readdirp": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/readdirp/-/readdirp-4.1.2.tgz",
+      "integrity": "sha512-GDhwkLfywWL2s6vEjyhri+eXmfH6j1L7JE27WhqLeYzoh/A3DBaYGEj2H/HFZCn/kMfim73FXxEJTw06WtxQwg==",
+      "devOptional": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 14.18.0"
+      },
+      "funding": {
+        "type": "individual",
+        "url": "https://paulmillr.com/funding/"
+      }
+    },
     "node_modules/recast": {
       "version": "0.23.11",
       "resolved": "https://registry.npmjs.org/recast/-/recast-0.23.11.tgz",
@@ -2936,6 +3669,13 @@
       "integrity": "sha512-+FbBPE1o9QAYvviau/qC5SE3caw21q3xkvWKBtja5vgqOWIHHJ3ioaq1VPfn/Szqctz2bU/oYeKd9/z5BL+PVg==",
       "license": "MIT"
     },
+    "node_modules/tinyexec": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-1.0.1.tgz",
+      "integrity": "sha512-5uC6DDlmeqiOwCPmK9jMSdOuZTh8bU39Ys6yidB+UTt5hfZUPGAypSgFRiEp+jbi9qH40BLDvy85jIU88wKSqw==",
+      "devOptional": true,
+      "license": "MIT"
+    },
     "node_modules/tmp": {
       "version": "0.2.5",
       "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.2.5.tgz",
@@ -2967,7 +3707,7 @@
       "version": "5.9.3",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.9.3.tgz",
       "integrity": "sha512-jl1vZzPDinLr9eUt3J/t7V6FgNEw9QjvBPdysz9KfQDD41fQrC2Y4vKQdiaUpFT4bXlb1RHhLpp8wtm6M5TgSw==",
-      "dev": true,
+      "devOptional": true,
       "license": "Apache-2.0",
       "bin": {
         "tsc": "bin/tsc",
@@ -3014,6 +3754,15 @@
         "browserslist": ">= 4.21.0"
       }
     },
+    "node_modules/uuid": {
+      "version": "8.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.2.tgz",
+      "integrity": "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==",
+      "license": "MIT",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/write-file-atomic": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/write-file-atomic/-/write-file-atomic-5.0.1.tgz",
diff --git a/package.json b/package.json
index 669671c..7b7ae01 100644
--- a/package.json
+++ b/package.json
@@ -11,7 +11,11 @@
     "prepare": "next-ws patch"
   },
   "dependencies": {
+    "@auth/prisma-adapter": "^2.11.0",
+    "@prisma/client": "^6.17.0",
+    "bcryptjs": "^3.0.2",
     "next": "^15.5.4",
+    "next-auth": "^4.24.11",
     "next-ws": "^2.1.3",
     "react": "19.1.0",
     "react-dom": "19.1.0",
@@ -24,6 +28,7 @@
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "@types/ws": "^8.18.1",
+    "prisma": "^6.17.0",
     "tailwindcss": "^4",
     "typescript": "^5"
   }
diff --git a/prisma/migrations/20251010031903_init/migration.sql b/prisma/migrations/20251010031903_init/migration.sql
new file mode 100644
index 0000000..f44a0e9
--- /dev/null
+++ b/prisma/migrations/20251010031903_init/migration.sql
@@ -0,0 +1,57 @@
+-- CreateTable
+CREATE TABLE "User" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "name" TEXT,
+    "email" TEXT,
+    "emailVerified" DATETIME,
+    "image" TEXT,
+    "password" TEXT
+);
+
+-- CreateTable
+CREATE TABLE "Account" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "userId" TEXT NOT NULL,
+    "type" TEXT NOT NULL,
+    "provider" TEXT NOT NULL,
+    "providerAccountId" TEXT NOT NULL,
+    "refresh_token" TEXT,
+    "access_token" TEXT,
+    "expires_at" INTEGER,
+    "token_type" TEXT,
+    "scope" TEXT,
+    "id_token" TEXT,
+    "session_state" TEXT,
+    CONSTRAINT "Account_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "Session" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "sessionToken" TEXT NOT NULL,
+    "userId" TEXT NOT NULL,
+    "expires" DATETIME NOT NULL,
+    CONSTRAINT "Session_userId_fkey" FOREIGN KEY ("userId") REFERENCES "User" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
+
+-- CreateTable
+CREATE TABLE "VerificationToken" (
+    "identifier" TEXT NOT NULL,
+    "token" TEXT NOT NULL,
+    "expires" DATETIME NOT NULL
+);
+
+-- CreateIndex
+CREATE UNIQUE INDEX "User_email_key" ON "User"("email");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Account_provider_providerAccountId_key" ON "Account"("provider", "providerAccountId");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "Session_sessionToken_key" ON "Session"("sessionToken");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "VerificationToken_token_key" ON "VerificationToken"("token");
+
+-- CreateIndex
+CREATE UNIQUE INDEX "VerificationToken_identifier_token_key" ON "VerificationToken"("identifier", "token");
diff --git a/prisma/migrations/20251010050851_add_game_save/migration.sql b/prisma/migrations/20251010050851_add_game_save/migration.sql
new file mode 100644
index 0000000..fc28552
--- /dev/null
+++ b/prisma/migrations/20251010050851_add_game_save/migration.sql
@@ -0,0 +1,14 @@
+-- CreateTable
+CREATE TABLE "Game" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
+);
+
+-- CreateTable
+CREATE TABLE "Save" (
+    "id" TEXT NOT NULL PRIMARY KEY,
+    "createdAt" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    "state" TEXT NOT NULL,
+    "gameId" TEXT NOT NULL,
+    CONSTRAINT "Save_gameId_fkey" FOREIGN KEY ("gameId") REFERENCES "Game" ("id") ON DELETE CASCADE ON UPDATE CASCADE
+);
diff --git a/prisma/migrations/migration_lock.toml b/prisma/migrations/migration_lock.toml
new file mode 100644
index 0000000..2a5a444
--- /dev/null
+++ b/prisma/migrations/migration_lock.toml
@@ -0,0 +1,3 @@
+# Please do not edit this file manually
+# It should be added in your version-control system (e.g., Git)
+provider = "sqlite"
diff --git a/prisma/prisma/dev.db b/prisma/prisma/dev.db
new file mode 100644
index 0000000..de5f69b
Binary files /dev/null and b/prisma/prisma/dev.db differ
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
new file mode 100644
index 0000000..8290513
--- /dev/null
+++ b/prisma/schema.prisma
@@ -0,0 +1,76 @@
+// Prisma schema for NextAuth (SQLite) with credential passwords
+
+datasource db {
+  provider = "sqlite"
+  url      = env("DATABASE_URL")
+}
+
+generator client {
+  provider = "prisma-client-js"
+}
+
+model User {
+  id            String    @id @default(cuid())
+  name          String?
+  email         String?   @unique
+  emailVerified DateTime?
+  image         String?
+  password      String?
+
+  accounts Account[]
+  sessions Session[]
+}
+
+model Account {
+  id                String  @id @default(cuid())
+  userId            String
+  type              String
+  provider          String
+  providerAccountId String
+  refresh_token     String?
+  access_token      String?
+  expires_at        Int?
+  token_type        String?
+  scope             String?
+  id_token          String?
+  session_state     String?
+
+  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
+
+  @@unique([provider, providerAccountId])
+}
+
+model Session {
+  id           String   @id @default(cuid())
+  sessionToken String   @unique
+  userId       String
+  expires      DateTime
+
+  user User @relation(fields: [userId], references: [id], onDelete: Cascade)
+}
+
+model VerificationToken {
+  identifier String
+  token      String   @unique
+  expires    DateTime
+
+  @@unique([identifier, token])
+}
+
+model Game {
+  id        String   @id @default(cuid())
+  createdAt DateTime @default(now())
+
+  saves Save[]
+}
+
+model Save {
+  id        String   @id @default(cuid())
+  createdAt DateTime @default(now())
+  state     String   // JSON string payload
+
+  game   Game   @relation(fields: [gameId], references: [id], onDelete: Cascade)
+  gameId String
+}
+
+