17 native MCP tools | Claude, ChatGPT, Gemini & Copilot | Real collision physics from a phone scan | The AI-Native Spatial Runtime — Now in Early Access Explore the runtime →
>> SELECT YOUR GAME <<
★ POWERED BY RAKUAI ★ — GAMES 100% IN YOUR BROWSER LIVE RUNTIME: CHECKING…

> ENGINE UPLINK LOCAL checking the live runtime…

LOCAL ran in this browser — no network LIVE a real HTTP round trip to api.rakuai.com
⚡ NEW
>> SPATIAL ARENA <<
Watch an agent play a game inside a rendered 3D scene by issuing the same tool sequence an LLM drives over MCP. Or take the controls yourself. The autoplayer is a scripted agent, not an LLM — it runs the control loop deterministically, and the arena page says exactly which parts are local and which are a real round trip.
ENTER THE ARENA →
>> WHERE THE ENGINE CAME FROM <<

The arcade came first. We built the engine for games, then taught it to understand real rooms. These cabinets run on the engine's JS port — the browser-side sibling of that runtime, with the same shape of worlds, entities and scene state. The native physics that bounces a ball off your actual couch lives in the runtime, not in this tab; the arcade is where the ideas were worked out.

See the engine understand a real room →
>> ACHIEVEMENTS <<

★ HALL OF FAME ★

Earned and stored in this browser only. Nothing is uploaded, and there is no global ranking.

>> TOP SCORES <<

★ YOUR HIGH SCORES ★

Local to this browser. We do not collect your scores, so this board is yours alone — clearing it below really does erase it.

#GAMESCORE
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