Petri

Petri is a petri dish simulator where the growth is real.

Pour a plate, touch a loop to the agar, and wait. What happens next

isn't animated — bacterial colonies, moulds, yeasts and slime moulds

are integrated live on your graphics card from published growth

models. The branching, the inhibition halos, the succession from

bacteria to fungi all fall out of the mathematics, the same way they

fall out of the biology.

Bend time from real-time to a week per second. Scrub the timeline

back through the plate's actual stored past and grow a different

future. Read it with instruments: X-ray, colonisation age, chemistry,

what's growing right now. Open dishes already three days or ninety

days old.

This is an early build, published to be picked apart. If you teach

microbiology or work in it, I want to know where it lies to a

student — wrong rates, wrong shapes, missing mechanisms. Every

approximation in it is written down rather than hidden.

Collects nothing. No accounts, no analytics.

Free to play, and free to use in class.