You are a cell in a Petri dish. Avoid enemy cells and collect food particles to survive!
Petri features three playable cell types, more than a dozen levels, various enemies, exciting boss battles, an endless survival mode, medals, and high scores. Plus, it has a fantastic ambient soundtrack by Fubaka!
Use the arrow keys or WASD to move, press spacebar to activate your special ability, and press 'p' to pause the game. Enemies only hurt you with their spikes or electricity. If the game is running slowly, go to the Pause menu and lower the quality.