Trio-O can be played with 2-4 players.
Each player controls the game pieces opposite each other on the board. One player will be red and green. The other blue and purple. Beginning with red, the first player moves any sized game piece onto any available space on the game board.
Play moves in a clockwise direction, with purple going next.
Continue around until one player's same-colored game pieces achieves the following:
The same rules as above, except each player only controls one color. In the event of three players, omit a fourth color of user's choosing from play.