Adding on to Planet Explorer is a math puzzle game. In this game, you will travel to many worlds and discover vast gem-filled treasures. But first, you must discover an addition expression that produces results that are distinct from the other 3. You'll be sent to a new planet if you choose the right choice. See how many planets you can visit by combining all of your mathematical abilities.
Instruction to play:
Use a mouse or touch-pad to play this game.