The Gameplay changes from stage to stage. In Stage 1, you control Plankton, who is rampaging the streets of Bikini Bottom. You aim with the mouse and shoot laser beams by clicking. You shoot down cars (strangely, cars were used instead of boats, Bikini Bottom's main way of travel.), tanks, and planes, while picking up Krabby Patties for health. In Stage 2, you control SpongeBob SquarePants (Minifigure), who is avoiding enemy fire in a plane.
As of January 22nd, 2013, this game can still be played on LEGO.com.