If your opponent already started, the size they picked is used.
No partner? Play the computer
Type your name and pick a board size above, then pick an opponent.
Your opponent types the same two names on their own device and you're matched automatically.
Each turn you have 20 seconds — run out of time and you lose.
Tap the space between two dots to pick a line, then tap Draw.
When every square is filled, whoever owns the most squares wins.