Planet explorer addition is a math puzzle game. In this game, you will explore different planets with a big treasure of gems. But before moving to a planet you need to find an addition expression that results differ from the other 3. Your correct selection will bring you a new planet. Collect your all math skills and see how many planets you can travel to. addition,math game,puzzle game,educational game,mobile game,arcade game,gem collection,planet explorer,math skills,treasure,kids games,fun learning,brain teaser,number games