Bonk's Adventure is an extremely entertaining platform game where our caveman hero with the rock solid cranium, Bonk, must battle dinosaurs and other nasties in order to save Princess Za from the evil King Drool. That tongue in cheek description basically sums up what this game is all about... FUN!
Bonk's main weapon is his head, and he battles the baddies by bonking them with his brow of granite. There are powerups that allow him greater strength, and in some cases short periods of invulnerability.
The boss levels are tons of fun too. There isn't one part of the gratuitous cartoon violence that isn't a blast, with a few laughs to be had throughout.
I would say that the game play for this cartridge rates 8-10, controls 8-10, and overall 8-10. I recommend that you dust off your loincloth and grab your club from the corner and give this fun little game a try.