Petri Loop

Grow. Circle. Close the loop.

Guide a golden organism through a living Petri dish. Gather nutrients, curve around colorful colonies and touch your own body to close a loop. Bigger captures bring bigger rewards, but every extra turn becomes a risk as the pace rises.

• Chase your best score in a 90-second culture run.
• Capture whole cyan-marked colonies together for a bonus.
• Keep the loop you close and shed the tail outside it.
• Avoid the rim and dark contaminants. They end your run.

Controls

Desktop: steer with WASD or arrow keys. Press Space or P to pause, and R to restart.
Touch: swipe to steer and use the on-screen pause and restart buttons.

Sound starts off. Enable it with the sound button. Your best score and sound preference are saved in this browser when storage is available. Small screens may scroll vertically to reach the lower panel.

Free to play in your browser. No account or download needed. Donations are optional.

More from PlayNoodles

Try Tilt Cabinet for a cozy gravity puzzle, or outwit guards with your past in Borrowed Shadow.

Follow PlayNoodles for new games and updates. Add Petri Loop to a collection and tell us your best capture in the comments.

Created with AI assistance for artwork, code and text, under human direction.

Quicksand fonts are used under their included license.