PLAN: refine Phase 16 (3D Games) structure and sample progression

- corrected Phase 16 description to focus on 3D rendering, camera, physics, and interaction
- defined 3D sample set (1601–1608) with clear learning progression
- established ordered progression from foundations → physics → gameplay
- aligned samples to engine modules (scene, rendering, input, physics, systems)
- removed networking overlap with Phase 13

no runtime changes
docs/structure only

Author: DavidQ

samples/index.html

@@ -306,16 +306,20 @@ <h2>Phase 15 - Advanced Systems (1501-1506)</h2>
         <a class="live" href="./Phase%2015%20-%20Advanced%20Systems%20(1501-1506)/sample1506-scene-graph-entity-hierarchy-viewer/index.html">Sample 1506 - Scene Graph Entity Hierarchy Viewer</a>
       </div>
     </section>
-    <!--
     <section>
-      <h2>Phase 16 - Demo Network Games (160x-160x)</h2>
-      <p>Playable demo games featuring real-time multiplayer gameplay over the network with synchronized state and collaborative world interactions.</p>
+      <h2>Phase 16 - 3D Games (160x-160x)</h2>
+      <p>Playable 3D demo games showcasing camera systems, 3D movement, rendering, physics, and world interaction built on the engine.</p>
       <div class="grid">
-        <a class="planned" href="./Phase%2016%20-%20Demo%20Network%20Games%20(160x-160x)/Demo%201601%20-%20Tic%20Tac%20Toe/index.html">Demo 1601 - Tic Tac Toe</a>
-        <a class="planned" href="./Phase%2016%20-%20Demo%20Network%20Games%20(160x-160x)/Demo%201602%20-%20Connect%204/index.html">Demo 1602 - Connect 4</a>
+        <a class="planned" href="./Phase%2016%20-%203D%20Games%20(160x-160x)/Demo%201601%20-%203D%20Cube%20Explorer/index.html">Demo 1601 - 3D Cube Explorer</a>
+        <a class="planned" href="./Phase%2016%20-%203D%20Games%20(160x-160x)/Demo%201602%20-%203D%20Maze%20Runner/index.html">Demo 1602 - 3D Maze Runner</a>
+        <a class="planned" href="./Phase%2016%20-%203D%20Games%20(160x-160x)/Demo%201603%20-%20First%20Person%20Walkthrough/index.html">Demo 1603 - First Person Walkthrough</a>
+        <a class="planned" href="./Phase%2016%20-%203D%20Games%20(160x-160x)/Demo%201604%20-%203D%20Platformer/index.html">Demo 1604 - 3D Platformer</a>
+        <a class="planned" href="./Phase%2016%20-%203D%20Games%20(160x-160x)/Demo%201605%20-%203D%20Driving%20Sandbox/index.html">Demo 1605 - 3D Driving Sandbox</a>
+        <a class="planned" href="./Phase%2016%20-%203D%20Games%20(160x-160x)/Demo%201606%20-%203D%20Physics%20Playground/index.html">Demo 1606 - 3D Physics Playground</a>
+        <a class="planned" href="./Phase%2016%20-%203D%20Games%20(160x-160x)/Demo%201607%20-%203D%20Space%20Shooter/index.html">Demo 1607 - 3D Space Shooter</a>
+        <a class="planned" href="./Phase%2016%20-%203D%20Games%20(160x-160x)/Demo%201608%20-%203D%20Dungeon%20Crawler/index.html">Demo 1608 - 3D Dungeon Crawler</a>
       </div>
     </section>    
-    -->
   </div>
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