Predictable
An infinite, one-input game about being predictable: a small model learns your turns and puts walls where you were going.
Tap a side to turn.
Snake, with no apple. The snake never grows and never speeds up. While you play, a small model of your own turns guesses each move before you make it. Where it expects you to be four moves from now a ghost appears, and two thirds of a second later it is a wall.
Every move wears its verdict: coral if it saw it coming, cyan if it did not. It sees only your turns, so it learns your dodges too.
Nothing gets harder. The only thing that changes is how well it knows you.
The card says how often it guessed you, beside what a coin flip would score.
Canvas2D, so the game is whole on any phone. No camera, no account, and nothing leaves the machine.