Build, Shoot, Score & Conquer the Cosmos! The Smartivity Space Arcade Game is a STEM-based DIY kit for kids aged 6 and above. Assemble your own arcade shooter using a ratchet mechanism, then launch balls at the space-themed target board to score points. 1-2 Player Game Teaches Ratchet Mechanism, Elastic Force & Projectile Motion Made from Sustainable Material Mess-Free – No Glue Required Suitable for ages 6+