Nine tic-tac-toe boards inside one — and the cell you play decides which board your opponent plays next. Deep, fast, no luck. Play a friend online with challenges, a rating and match history, take on the built-in engine, or pass-and-play on one device.
Challenge a friend by name or code, or anyone in the lobby. A ready-check on both sides, a 10-minute clock each, and every result feeds a separate rating.
A minimax engine that looks several moves ahead — and plans where it sends you. Runs entirely in your browser, no server.
One board, one device, no sign-in. The active board is always highlighted for whoever's turn it is.
Win small boards to claim big-board squares; three big-board squares in a row wins. Every move both attacks and hands your opponent their next board.
