Much like the original "Bonk's Adventure" for TG-16, this game is a platforming gem that has aged remarkably well. Since Hudson Soft went with a colorful, cartoony approach in two dimensions, the game has held up in spectacular fashion, and far better than the vast majority of games from the 1990s. It was beautiful to look at when it was released (age 11 for me), and it's still pretty rad nowadays (at age 32).
In terms of gameplay, "Bonk's Revenge" retains the formula that was devised for the caveman's first outing. Which means that it's good- really good. There's nothing better than walking about prehistoric venues, jumping around and headbutting everything and everyone in sight. The Bonk series also has a very accessible level of difficulty, meaning that it can still be played for fun and with relative ease nowadays, unlike many retro platformers that are unbearably hard by contemporary standards. This game should be available for download on the Wii virtual console, if you don't happen to have a dusty TG-16 console sitting around your attic.
Bonk fans, rejoice! Polish your noggin and start headbutting!