Thank you so much, there is so much I will add to this game!
Android APK: Yes, definitely on the roadmap. The plan is to wrap the game as a mobile build once the core systems are stable. Online multiplayer works the same way, so an APK is a natural next step..exe / Windows build: Possible too via an Electron wrapper, and I'll consider it. But honestly the browser slowdowns you saw are most likely my own optimization debt (sprite animation pipeline, render loop), not a browser-vs-native issue. A native build would help a bit, but the real fix is on me, and I'm actively working on perf. The browser version should feel a lot smoother in upcoming builds.