106 tiles. Four colors, two of each number from 1 to 13, plus a red joker and a black joker. Everyone starts with 14 randomly drawn tiles.
Two to four players. Everyone agrees to start; turns follow joining order. Your first play must contain your own sets totaling at least 30. Jokers count as the numbers they represent. Lay down those opening sets first; then you can use existing sets in that same turn. Finish with Continue, which checks the entire turn.
A group is three or four of the same number in different colors. A run is three or more consecutive numbers of one color, in ascending or descending order. 12–13–1 is not a run. Either joker can be any number and color, and both can be in one set. You can free a joker however you like, but all tiles already on the table must remain in valid sets when you continue.
Move, split, and combine sets freely. The table is checked only when you press Continue. Play at least one rack tile, or draw one tile and end your turn. Undo turn & draw restores the whole table and your original rack before drawing. A draw always ends the turn. There is no timer and no hints.
The first person to empty their rack wins. Every other player gets exactly one final turn, in order. When the pool is empty, you can pass; a whole round of passes ends the game. When the game ends, all players and tiles are cleared. Everyone must join the empty room again. Any seated player can also end the game immediately using End game and confirming.
Late arrivals wait for the next game, or resume a disconnected seat. Anyone can take over a disconnected player's name and rack. A disconnected player's turn waits for someone to resume it.