Triominos is a game to Dominoes, in that players are laying tiles that match up to other tiles in the play area, with the goal to get points and be rid of tiles. In Triominoes, the pieces are triangles with numbers that mat are matched on each side. Each triangle has 3 numbers at the points, so to place a piece next to it, it must match two numbers on the side.
Pressman also released Quad-Ominos.
Goliath released a 6 player version with 20 additional unique stones as Triominos Gold.