Chuck Rock's ever loving wife (Ophella) has been kidnapped by an evil and rather good looking guy named Gary. Your mission is to rescue her as soon as possible, but it's not going to be an easy task as you have to fight with several nasties across your way! The story is set in the prehistoric age in which there are plenty of dinosaurs just waiting for you... as well as creatures that come in quite different shapes and sizes (!). Note that not all of these creatures will harm you, rather than some of them will give you a lift across swamps or deep gaps that would otherwise be impassable! There are five levels of platform action, each one being divided by 5 more sub-levels! Of course you are bound to pick up a few hits along your way and if you get too many then...you're dead, starting all over... So, do you really want to see Ophella again? Then grab your joystick and go for it!
The gameplay is really nice, following typical action platform moves in all eight directions. You may jump on several platforms in order to avoid enemies or grab a few bonuses, including energy potions (depicted as hearts).
The Atari ST version sports adequate and colorful graphics, lacking some details opposed to the Amiga and Archimedes versions. Most of the background details found on the other two 16bit counterparts are missing here, which makes the game rather poor in visuals. Sprites move fast though and most of them are very well designed. I've also noticed a few slowdowns when too many sprites populate the screen, but still the game is quite playable.
Sound offers a typical YM2149 introductory chip tune, just a few simplistic sound FX during gameplay and no in-game music (in contrast to the wonderful Amiga -and Archimedes - sound presentation).