Smarties: Meltdown is a 3D action platformer game. The game lets the player control one of the sweet Nestlé snacks and has to save the Smarties factory spaceship from an invasion by the evil dr. Soursweet and his underlings. The player takes control of a Smartie called Big Blue who is equipped with a power suite that enables him to walk and jump. Blue can also use hand-to-hand combat or a range weapon called the Choco Ray to defeat the underlings of dr. Soursweet. Permanent and temporary upgrades like super role and Super boots can be collected along the way.