BL00 is a fast-paced 3D platformer centered around using boost and homing attack combos to explore huge levels, all while taking down an army of killer robots.

Players control Bloo, a classy blue lad with a stylish top hat, as he tries to stop the pesky Android Empire from interrupting his peaceful solitary life on a not-quite-deserted island. To do this he must travel via teleporters to various different worlds and take down these deadly robots, getting Keys in the process. These Keys enable him to use more teleporters and explore more new areas.