Players must pick up all coloured eggs lying around the map as the Trog cavemen wander around, attempting to eat them. Unlike its influential predecessor, Pac-Man, the dinos can attack at any time with a punch that does not require a power-up. Power-ups also randomly spawn to help finish the level; these include red flowers that increase the player's speed, ice cubes that freeze all on-screen Trogs and pineapples, which turn the character into a full-grown T-Rex that can temporarily eat his enemies, and a firebrand which bestows a temporary fire breathing ability on the dinosaur.