Advanced architecture

Most creators can stop at the Creator API. This section explains the engine boundaries useful for deep debugging and platform work.

• Creator source compiles to verified controlled-VM instructions; JavaScript is never evaluated.
• The server owns trusted physics, score, state, saves, rewards, and result evidence.
• Rendering consumes renderer-neutral frames and presentation-only events.
• Browser input and creator content are untrusted and validated against bounded schemas.
• Published bundles and asset versions are immutable. Realtime clients declare matching protocol and physics adapters.

Continue with controlled runtime, physics compatibility, realtime protocol, and deterministic replays.