0-SNAKE by Evil Indie Games is an insane one-button snake game where you play with a creature that always is rotating. When you press the screen, it rotates to the other direction and reverses upon release.

The minimal art style makes the game more compelling: just simple colors with white dots for yourself and orange dots for points. As you grow longer the back color changes.

Don't underestimate the difficulty of the game. Your snake grows very long quickly, and it's very difficult to avoid hitting yourself. The game has 3 difficulty modes: Train where you wrap around borders, Challenge where there is no wrapping, and Master where there is a moving obstacle in the level.

The game is available on iOS for $0.99 (link) and on Android for free (link).