GEOMETRIKO is a turn–based game played on a 4x4 grid, and features four different tiles, aka Tiers, arranged in ascending order. Each player starts with an infinite number of Tier–1 tiles. Every time a player makes a three–of–a–kind he performs a Trip on the board; once a Trip is made it is removed from the board and the player is awarded an upgraded Tier. Making a four–of–a–kind, a Quad, gives the player two upgraded Tiers. If a higher Tier is put next to a lesser one, the lesser one switches side.
A player can win a match either by filling the entire board with more of his own tiles than his opponent’s, or by achieving a Trip/Quad of Tier–4 tiles.