Collector + Arena = Token Pulse

Original learning lab. Compare both donor modes and the hybrid. Move with WASD/arrows or direction buttons; pulse with the button. Hybrid: collect four tokens and survive twenty simulated seconds. Each token refills a pulse charge.

Ready

Leaving the tab pauses play. Restart clears all donor state. One host owns movement, time and outcomes. UI/browser/device acceptance remains open; native core checks are provided.