Four masters wait to challenge your memory and dexterity across twelve individual games. Remember the grins as they are switched and moved before your eyes. Follow the patterns as the grins light up in increasingly complex sequences. Manipulate the grins on the grid to return them to their starting positions. Can you defeat the masters and their increasingly challenging grins to earn all the stars, unlock all the games, and become a true Grindle master? Can you push the games through infinity mode to earn the new high score?