Control a robot who is tasked with rescuing various people and cute animals from horrible monsters in a four story world. Drol could shoot, had a jet pack, and could transition up and down the levels of the world through trap doors. Enemies include snakes, monsters, axes, and the dreaded robot eating plant. The children the robot had to rescue were chasing balloons, which could make them more difficult to catch. Similar to Defender, Drol featured a mini-map at the top of the screen to see approaching enemies and locate the robot's rescue targets.