The players prepare 7 GEMJI tiles and decide on the play order.
Taking turns, each player has 30 seconds to build the highest tower possible out of 7 tiles only. When the time is up, the tower must stand upright without being supported.
The player who makes the highest tower wins the game. The towers are measured with a ruler or another object (e.g. smartphone)
With the GEMJI full set of 70 tiles, the game could be played by 10 simultaneous players. Great for a team-building game.