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Enter the world of tiny, virtual protozoa. Take control of one in free play to just explore or attempt to outlast another in a variety of custom boards. The controls are simple, but in the spirit of experimentation you'll have to figure them out on your own by playing...
Price history tracked since Jul 7, 2026 · vs all tracked offers.
Based solely on tracked price history — not purchase advice.
Tracked since Jul 7, 2026.
Steam Train Fest starts Jul 20, 2026
Enter the world of tiny, virtual protozoa. Take control of one in free play to just explore or attempt to outlast another on a variety of custom boards. The controls are simple, but in the spirit of experimentation you'll have to figure them out on your own by playing. Don't worry, though: if your protozoa doesn't make it, you can always relax and keep watching to see what the other virtual protozoa get up to...
Once you've figured out how to control each proto-type (ha!), the Challenges mode lets you pick a type to try and outlast.
Each challenge board is customized for the specific face-off!
So, grab your mouse, keyboard, and/or controller and GO!
Lowest tracked price: CA$3.89 (Jul 7, 2026) · current best: CA$3.89.
Right now the cheapest offer for Proto-GO-a is CA$3.89 at Steam. KingsPrice compares 1 offers from 1 stores — official stores and keyshops — and refreshes prices throughout the day.
The lowest price KingsPrice has tracked for Proto-GO-a is CA$3.89 (recorded on Jul 7, 2026). This covers the stores and period we monitor — set a price alert to catch the next drop to that level.
Create a free price alert on this page and KingsPrice will email you when Proto-GO-a drops below your chosen price. The biggest discounts usually appear during seasonal Steam sales and publisher promotions — the sale calendar on this page shows the next confirmed event.
