Vectorman is an "orbot" (a robot whose body is composed entirely of orbs) powered with a ball gun in his hand; powerups include a machine gun, "bolo" gun, and triple-fire guns.
Vectorman possesses the ability to transform, through the use of powerups, into several different forms: including a drill, to cut through floors; a bomb, to destroy all surrounding enemies or breakable walls; and an aquatic form, useful for swimming underwater. In addition to powerup transformations, 3 levels host unique morphed forms with which to combat bosses in. Overall, the game consists of 16 levels.
In 2049, the human population of Earth embarks on a migratory voyage to try to colonize other planets. They leave mechanical "orbots" to clean up the mess they made on Earth through littering and pollution. Raster, a high-level orbot who watches Earth through a planetwide computer network, is accidentally attached to a working nuclear missile by a lesser orbot and goes insane, becoming an evil dictator named Warhead. He declares himself ruler of Earth, and begins preparing to execute any humans who dare return to their planet.
Enter Vectorman, a humble orbot in charge of cleaning up toxic sludge by simply discharging it into the sun. As he lands on Earth after his last trip, he finds chaos and confusion. Because all the other Orbots are controlled by Warhead (Vectorman having not been affected because he was away), Vectorman takes it upon himself to destroy the errant orbot and restore peace to Earth.
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After saving Earth from Warhead in the previous game, Vectorman's sludge barge is targeted and destroyed by a missile. Vectorman escapes, parachuting down to the planet to battle with the Earth's multitudinous enemy; mutant insects. Now it's up to Vectorman to fight through the mutant bugs and find the most fearsome source infestation; the evil Black Widow Queen.