Load your Add-stronauts into the spaceship before liftoff! Earn points by completing columns of Add-stronauts. Spin to select a sum, then use any combination of your available pieces to make the sum. Stack your pieces in the vertical game board. Practice counting and addition as you add to 10. Includes a vertical game board with score tracker and sum randomizer, 40 'Add-stronaut' pieces, and a guide. For 2 players.