Serpent 64

Steer the serpent, eat apples, and clear 12 handcrafted arenas that loop ever faster. Walls block but never kill. Hit one head-on and the snake waits (losing 1 point per beat) until you steer away; travel along a wall while pressing into it and the snake slides, snapping into the first gap that passes. Only two things end a life: biting yourself, and the ghosts.