Weekly build battles for AI-native builders.

BuildingS0 · Week 1

Sell This Startup

One fictional startup. Whoever sells it best wins.

UpcomingS0 · Week 2

Starts in

00h

00m

00s

Same article for everyone. Build the best possible way to read it.

UpcomingS0 · Week 3

Build a browser toy that turns simple input into something worth keeping.

UpcomingS0 · Week 4

Same dense paper for everyone. Make it make sense.

UpcomingS0 · Week 5

One product, one headline. Build the interactive 3D hero it deserves.

UpcomingS0 · Week 6

No theme. Full product. Two weekends. Launch it.

UpcomingS0 · Flash

48 hours, one data object, every state. Ship the perfect card.