I used to like Trionimoes before I knew what good games were. Unlike dominoes, there was something satisfying about the strage shapes they seemed to make on the board as they were played.

Summary: each player starts with six trionimoes, which are tirangles with all permutations of numbers 0 to 5 on them. Each player, starting with the player with a triple numbers (who gets a bonus) plays a trionimoe such that at least one side of the trionimoe (two numbers) match another already on the board.

Bonus points for matching three numbers, making complete hexagons, or making bridges. Bonus for going out first is sum of the numbers in opponent's hands.

Choosing the best location and the best piece to play is fairly trivial but not entirely so. Piece memorization is also a factor. Generally, however, one player picks a lot of pieces, and the other player goes out.

The plastic pieces are sturdy, but not as satisfying as wooden sets of dominoes are. There is slight enjoyment to be had when putting them away, in that the tray holds all the trionimoes in a plastic tray with hexagon shapes, which lets you try to arrange all of the pieces such that they match numbers correctly.