Tic-Tac-Boom
Three by three, X and O, three in a row takes the pot - and anyone watching can blow a mark off the board.
Tic-Tac-Boom is the game you already know, played for a pot. Two players, a three-by-three board, X and O. Three in a row, across, down or corner to corner, wins the pot.
It opens to you on the ladder: publish your first page on Grammata and Tic-Tac-Boom opens. See Achievements.
A turn
The player in the first seat plays first, and the seats take turns after that. On your turn you tap an empty square, and your mark goes there. Every move is yours, signed by you, and recorded the moment it lands - nobody can move for you, and nobody can take a move back.
A full board with no line is a draw: each player takes back half the pot. How a Lobby Works covers the draw and what happens when a match stalls.
The boom
Some tables are opened with bombs. At those tables, someone watching the match can blow a mark off the board - either player's, any time the match is on. The square is empty again, and either player can play there on a later turn.
A bomb is never a player's move. The two people seated cannot throw one; the boom belongs to the audience. It costs the thrower no sats, only the small charge for sending it, and it never touches the pot. The board says who threw each one.
Watching and Bombing is the page for the person throwing it.
When you win
The winner claims the pot, and the claim hands them the match itself as a keepsake: the trophy, a picture of the final board with the winning line, who they beat, the pot and the date. See Trophies.
See it
Two finished matches, drawn as their trophies, are on the game's page at testnet.risingtide.app/tic-tac-boom.