| The Famicom manual names Tokai Engineering as the game's maker and Sun Electronics as its seller; the North American manual is Sunsoft's, licensed by Nintendo. | title page (PDF p. 3)PDF p. 2 | Manual |
| In the North American manual Jason's pet frog Fred escapes and touches a huge radioactive chest, grows to an enormous size, and falls into the earth with it; Jason falls in after him. Below lie an armoured vehicle built to fight the radioactive mutants living under the Earth's crust, and the mutants' master, the Plutonium Boss, whom the player has to destroy. Nintendo Power tells it differently: there Jason finds the vehicle and jumps into the cockpit. | printed p. 2 (PDF p. 4), storyprinted p. 2 (PDF p. 4), storyprinted p. 2 (PDF p. 4), storyprinted p. 2 (PDF p. 4), storyprinted p. 2 (PDF p. 4), storyprinted p. 3 (PDF p. 5) | Manual |
| The game has eight levels, and some can only be finished by going back to earlier ones: Nintendo Power found no direct route from Stage 1 to the end. It is for one player and keeps no score. The player drives the vehicle, and at small doorways leaves it to fight on foot. | printed p. 4 (PDF p. 6)printed p. 4 (PDF p. 6)printed p. 4 (PDF p. 6)printed p. 4 (PDF p. 6) | Manual |
| Running out of power costs a life; both manuals give 3 lives and up to 5 continues a game. Catching power capsules adds power. | printed p. 6 (PDF p. 8), Powerprinted p. 6 (PDF p. 8), Powerprinted p. 4 (PDF p. 6) | Manual |
| Select gets Jason out of the vehicle and back in. B fires and A jumps; on foot, A throws hand grenades. The vehicle can shoot up or down, left or right. | printed p. 5 (PDF p. 7), controlsprinted p. 5 (PDF p. 7), controlsprinted p. 5 (PDF p. 7), controlsprinted p. 5 (PDF p. 7), controlsprinted p. 5 (PDF p. 7), controls | Manual |
| Beating a level's Mutant Boss earns a new weapon or vehicle function. The manual lists seven: Crusher and Hyper, which the chart gives as a super cannon and wall crushing, Hover, a Key to a certain door, Dive for swimming under water, Wall I for climbing walls, and Wall II for climbing ceilings. Hover comes from the stage 3 boss; Nintendo Power found that options like it let the vehicle reach higher stages. | printed p. 8 (PDF p. 10), Menu Screenprinted p. 8 (PDF p. 10), Weapons/Vehicle Functions Chartprinted p. 8 (PDF p. 10), Weapons/Vehicle Functions Chartprinted p. 6 (PDF p. 8), Hover Gauge | Manual |
| The vehicle's main weapon is a cannon. Three special weapons, the Homing Missile, Thunder Break, and Multi Warhead Missile, are earned by catching certain objects and fired with down and B. | printed p. 9 (PDF p. 11), Special Weaponsprinted p. 9 (PDF p. 11), Special Weaponsprinted p. 9 (PDF p. 11), Special Weaponsprinted p. 9 (PDF p. 11), Special Weaponsprinted p. 9 (PDF p. 11), Special Weapons | Magazine |