About the game
Petri is an arena game in the style of agar.io. You start as a small cell in a big dish. Eat pellets to grow, swallow cells smaller than you and keep away from the bigger ones. Every match starts fresh.
The other cells are computer players, and you choose how many, from 10 to 60. Split to lunge at prey, eject mass, and watch out for viruses, which burst big cells. Power-ups give speed, a star that makes you invincible for 15 seconds, or double or halve your mass.
How to play
- Move with the mouse or your finger. Your cell follows.
- Eat pellets and smaller cells to gain mass.
- Press Space or SPLIT to lunge at prey; W or EJECT ejects mass.
- Avoid bigger cells. If you are eaten, play again or spectate.
Highlights
- Agar-style arena with no ads
- 10 to 60 computer cells, your choice
- Speed, star, grow and shrink power-ups
- Gradient skins plus light and dark themes
- Spectate mode with a free camera