Think you can stack up to the competition? Robik’s Stack Attack combines fast-paced match three puzzle play with tricky combo-stacking of adorable Russian Gizmo stacking dolls! Slide Gizmos to match three of the same Gizmos to combine them into one larger doll. Keep matching to grow the Gizmo dolls and get a massive score boost! But careful, you only have so many moves. If you run out of moves, it's game over!