Open a room
Nine by nine. You sit as Black. The person who joins sits as White.
The app
Go
Two players, each on their own phone or computer. A nine-by-nine board. Black plays first. Capture by taking the last liberty. Two passes end the game. White has 6.5 komi.
Join a room
Sit with anyone who is waiting, or use a code they sent you.
No one is waiting right now.