Each level begins with the player in control of a single Clyde. As they progress through the level, more Clydes can be found inside crates or created using cloning machines. Each of these clones can then be switched to and controlled by the player. Before the exit of a level can be reached, all surveillance robots must be destroyed, which opens up blocked grates leading to the exit. Only a single Clyde can leave via the exit, while the others must be directed to pipes to be saved. The game consists of 35 levels, including 25 standard levels and 10 challenge levels.