On a mobile device I can't interact with the game, consider detecting mobile screen sizes and loading some gifs :)
You are spot on. The rendering pipeline is fully optimized for mobile and should be hitting 60FPS, but the Input System is currently wired to physical events (WASD/Gamepad).
I prioritized the wGPU rendering performance for this release, so touch controls are the next thing on my backlog for v0.3.0. Appreciate the feedback!