The gameplay is very similar to Elevator Action and Elevator Action EX. The player, as Dexter, runs through different levels via elevators, elevator shafts, small cars, ledges, and doors while battling robots with an assortment of weapons. Three different Dexter suits are available, though they have no effect on gameplay. Each stage ends with the player facing a line of enemies.
Source: Wikipedia, "Dexter's Laboratory: Robot Rampage", available under the CC-BY-SA License.