Tridecco

From BoardGameGeek:

This is a 2-4 player competitive strategy tile game. The object of the game is to get rid of your pieces first. The board consists of 13-sided Einstein shapes. On a turn, a player can play one piece. If playing the piece forms a hexagon, the player can move again. The game board is a continuous einstein shape map of 13-sided shapes (Tridecagons). The pieces have two different colors and each player has a unique combination of two colors. It's easier to connect with other players' pieces to form hexagons, so one cannot simply build off of their own piece. The game rules are very simple. The challenge of this game is grasping shape geometries, and getting a spatial recognition of how the shape work and connect. This can take some getting use to. The game really challenges ones' ability to visualize geometry. -description from the designer