Fault Line X Super Mega Bot is Fault Line and Super Mega Bot combined into one game. The main characters are Zapo and Zapo's Cousin, each working together.
The player starts off as Zapo in some levels, and his cousin in others. How the game works is Zapo uses his Lines, and Zapo's Cousin uses his bouncing upwards and downwards. The player can drag the mouse on the screen anywhere creating a crosspath. When Zapo goes through this he truns into his cousin, and vice versa. The player can then create another crosspath to go back to the other robot. They will need to do this many times to proceed in the game.