You wake in the Bugs' Fortress as a nameless, harmless little face. Evolve through 8 monstrous stages by devouring every bug in the halls.

W A S D move   MOUSE look   CLICK / B bite   ESC cursor

Bugs that spot you will hunt you — get caught first and you lose a life. At Stage 8, press F to smash a wall (3 uses). Grab the glowing cyan gem to go unstoppable for a few seconds — bugs die on touch until the field breaks. A rarer red gem always adds an extra life, even at full health.

1: bare face → 2: teeth → 3: blood → 4: one arm → 5: knife → 6: feet → 7: both arms → 8: the Beast.