After having completed the Quest For Tires, Thor is back looking for the meaning of life.
And that means another tortuous unicycle ride up mountains and through caves, collecting clams as he goes.
Rocks, potholes, pterodactyls and the mighty Grog all conspire to thwart Thor's progress.
BC and friends is one of America's most successful cartoon strips. The cartoonist, Johnny Hart, supervised the graphics throughout the game's development and it shows in the quality of the cartoon-like characters.
If you liked BC's Quest For Tires, you'll probably love Grog's Revenge. Also available soon for the Atari, Amstrad, Spectrum and BBC.