10 to the Top Addition Game by Learning Resources10 to the Top Addition Game Don't topple the tower! Players race to make 10 by stacking a number cube on top of the last one placed for a fun way to build early addition skills. It's a game of quick thinking and steady hands. How high can you go? Stack all of your cubes first, and win! Includes 30 durable, soft foam cubes for easy stacking and quiet game play. Cube measure 1L x 1 H. For 2 4 players. Ages 5+ Warning(s): SMALL PARTS (1). Not for < 3 yrs.