saura quad map

assets/menu.json

@@ -16,6 +16,10 @@
         { "label": "Sanctuary (Full)", "action": "sanctuary" },
         { "label": "Dam (Multi-water)", "action": "dam" },
         { "label": "Waterfall (Flow)",  "action": "waterfall" },
+        { "label": "Physics Playground","action": "playground" },
+        { "label": "Four-Quadrant Map", "action": "fourmap" },
+        { "label": "Builders (top-down)", "action": "builders" },
+        { "label": "Odyssey (Explore)",   "action": "odyssey" },
         { "label": "Level Editor",    "action": "edit" },
         { "label": "Quit",            "action": "quit" }
     ]