diff --git a/package.json b/package.json
index 5e4de86..c0ab5f5 100644
--- a/package.json
+++ b/package.json
@@ -21,6 +21,7 @@
     "npm": "^11.16.0",
     "react": "^19.2.6",
     "react-dom": "^19.2.6",
+    "react-router-dom": "^7.16.0",
     "three": "^0.184.0",
     "uuid": "^14.0.0"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 55f7fe8..230f488 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -41,6 +41,9 @@ importers:
       react-dom:
         specifier: ^19.2.6
         version: 19.2.6(react@19.2.6)
+      react-router-dom:
+        specifier: ^7.16.0
+        version: 7.16.0(react-dom@19.2.6(react@19.2.6))(react@19.2.6)
       three:
         specifier: ^0.184.0
         version: 0.184.0
@@ -679,6 +682,10 @@ packages:
   convert-source-map@2.0.0:
     resolution: {integrity: sha512-Kvp459HrV2FEJ1CAsi1Ku+MY3kasH19TFykTz2xWmMeq6bk2NU3XXvfJ+Q61m0xktWwt+1HSYf3JZsTms3aRJg==}
 
+  cookie@1.1.1:
+    resolution: {integrity: sha512-ei8Aos7ja0weRpFzJnEA9UHJ/7XQmqglbRwnf2ATjcB9Wq874VKH9kfjjirM6UhU2/E5fFYadylyhFldcqSidQ==}
+    engines: {node: '>=18'}
+
   cross-env@7.0.3:
     resolution: {integrity: sha512-+/HKd6EgcQCJGh2PSjZuUitQBQynKor4wrFbRg4DtAgS1aWO+gU52xpH7M9ScGgXSYmAVS9bIJ8EzuaGw0oNAw==}
     engines: {node: '>=10.14', npm: '>=6', yarn: '>=1'}
@@ -1180,6 +1187,23 @@ packages:
     peerDependencies:
       react: ^19.2.6
 
+  react-router-dom@7.16.0:
+    resolution: {integrity: sha512-kMUAbimWB5FVbF4Bce4bJsiKJWLIUHq/mEG8+CFDnCSgltptBiG5nguducmsJeGKytlCvQud9Qhzpn49iduTlA==}
+    engines: {node: '>=20.0.0'}
+    peerDependencies:
+      react: '>=18'
+      react-dom: '>=18'
+
+  react-router@7.16.0:
+    resolution: {integrity: sha512-wArC8lVyJb3+jM9OpDyW6hLCizACWkvQR/sSGqSs+o5uEXEtGlqdZ4v8hENR3Jad6i+LRkK93q/+bQAcvl6V1A==}
+    engines: {node: '>=20.0.0'}
+    peerDependencies:
+      react: '>=18'
+      react-dom: '>=18'
+    peerDependenciesMeta:
+      react-dom:
+        optional: true
+
   react-use-measure@2.1.7:
     resolution: {integrity: sha512-KrvcAo13I/60HpwGO5jpW7E9DfusKyLPLvuHlUyP5zqnmAPhNc6qTRjUQrdTADl0lpPpDVU2/Gg51UlOGHXbdg==}
     peerDependencies:
@@ -1223,6 +1247,9 @@ packages:
     engines: {node: '>=10'}
     hasBin: true
 
+  set-cookie-parser@2.7.2:
+    resolution: {integrity: sha512-oeM1lpU/UvhTxw+g3cIfxXHyJRc/uidd3yK1P242gzHds0udQBYzs3y8j4gCCW+ZJ7ad0yctld8RYO+bdurlvw==}
+
   shebang-command@2.0.0:
     resolution: {integrity: sha512-kHxr2zZpYtdmrN1qDjrrX/Z1rR1kG8Dx+gkpK1G4eXmvXswmcE1hTWBWYUzlraYw1/yZp6YuDY77YtvbN0dmDA==}
     engines: {node: '>=8'}
@@ -2023,6 +2050,8 @@ snapshots:
 
   convert-source-map@2.0.0: {}
 
+  cookie@1.1.1: {}
+
   cross-env@7.0.3:
     dependencies:
       cross-spawn: 7.0.6
@@ -2387,6 +2416,20 @@ snapshots:
       react: 19.2.6
       scheduler: 0.27.0
 
+  react-router-dom@7.16.0(react-dom@19.2.6(react@19.2.6))(react@19.2.6):
+    dependencies:
+      react: 19.2.6
+      react-dom: 19.2.6(react@19.2.6)
+      react-router: 7.16.0(react-dom@19.2.6(react@19.2.6))(react@19.2.6)
+
+  react-router@7.16.0(react-dom@19.2.6(react@19.2.6))(react@19.2.6):
+    dependencies:
+      cookie: 1.1.1
+      react: 19.2.6
+      set-cookie-parser: 2.7.2
+    optionalDependencies:
+      react-dom: 19.2.6(react@19.2.6)
+
   react-use-measure@2.1.7(react-dom@19.2.6(react@19.2.6))(react@19.2.6):
     dependencies:
       react: 19.2.6
@@ -2434,6 +2477,8 @@ snapshots:
 
   semver@7.8.1: {}
 
+  set-cookie-parser@2.7.2: {}
+
   shebang-command@2.0.0:
     dependencies:
       shebang-regex: 3.0.0
diff --git a/src/App.tsx b/src/App.tsx
index 497805e..280361d 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,12 +1,81 @@
+import { BrowserRouter, Link, Outlet, Route, Routes, useNavigate, useParams } from 'react-router-dom';
+import { useEffect } from 'react';
+import { reaction } from 'mobx';
 import { ThreeView } from './components/ThreeView';
-import './App.scss';
 import { Toolbar } from './components/Toolbar';
+import { state } from './state';
+import './App.scss';
+
+function StateToUrlSync() {
+    const navigate = useNavigate();
+    useEffect(() => reaction(
+        () => ({
+            isGame: state.isGamePlaying,
+            selectedId: state.worldEditor.selectedObjectId,
+        }),
+        ({ isGame, selectedId }) => {
+            if (isGame) navigate('/game');
+            else if (selectedId) navigate(`/editor/object/${selectedId}`);
+            else navigate('/editor');
+        },
+    ), []);
+    return null;
+}
+
+function EditorRoute() {
+    useEffect(() => {
+        if (state.isGamePlaying) state.stopGame();
+        state.worldEditor.resetSelectedObject();
+    }, []);
+    return null;
+}
+
+function EditorObjectRoute() {
+    const { id } = useParams<{ id: string }>();
+    useEffect(() => {
+        if (!id) return;
+        if (state.isGamePlaying) state.stopGame();
+        const mode = state.worldEditor.selectedObjectId === id
+            ? state.worldEditor.selectedObjectMode ?? 'translate'
+            : 'translate';
+        state.worldEditor.setSelectedObject(id, mode);
+    }, [id]);
+    return null;
+}
+
+function GameRoute() {
+    useEffect(() => {
+        if (!state.isGamePlaying) state.startGame();
+    }, []);
+    return null;
+}
+
+function HomePage() {
+    return <Link to="/editor">Open Editor</Link>;
+}
+
+function EditorLayout() {
+    return (
+        <>
+            <Outlet />
+            <ThreeView />
+            <Toolbar />
+        </>
+    );
+}
 
 export const App = function () {
-  return (
-    <>
-      <ThreeView />
-      <Toolbar />
-    </>
-  )
-}
+    return (
+        <BrowserRouter>
+            <StateToUrlSync />
+            <Routes>
+                <Route path="/" element={<HomePage />} />
+                <Route element={<EditorLayout />}>
+                    <Route path="/editor" element={<EditorRoute />} />
+                    <Route path="/editor/object/:id" element={<EditorObjectRoute />} />
+                    <Route path="/game" element={<GameRoute />} />
+                </Route>
+            </Routes>
+        </BrowserRouter>
+    );
+};