Radar Rex, a fire-breathing Tyrannosaurus on a skateboard, must save the dinosaur race from the evil creature's spell. The game takes place in 10 levels set in the prehistoric age. Radar Rex can use his skateboard or glide down hills, jump, kick, and breathe fire. Tougher enemies require multiple hits, while burnt Rex needs to kick them once more to destroy them. His scream can also be used to hit everything on the screen.
As Radar Rex collects eggs, health, power-ups for his fire breath, and scream refills, he must navigate through levels filled with enemies such as flies, turtles, toads, and other dinosaurs. Checkpoints are shown as torches that need to be charged with fire after each level. Completing a level also earns an extra continue in a Bomberman-like sequence.