There are GB Genjin (Bonk's adventure or B.C. Kid) 1 - 2 and GB Genjin Land in one cartridge.

GB Genjin: Indulge yourself in this breathtaking and mind-blowing adventure. As Bonk the Caveman, use your head against Kongo Zilla, Tractorhead and the wackiest array of prehistoric enemies ever seen. Be sure to eat your meat and veggies as you power up to fight Evil King Drool himself. It's a real headbanger!

GB Genjin: Bonk is back! Last year's hit video smashes its way through a totally awesome new adventure! Help this radical caveman save the dinosaur kingdom from the heinous King Drool III. Bigger, badder bosses. More powerful power-ups. More excellent hidden secrets. And more worlds of pre-hysterical action that will have you cracking up while you're busting some heads. Go back to the age of Bonk, the coolest era of mankind, and treat yourself!