From the back of the box:
"Motorcycle racing and jungle adventure -- all on one Sega Combo Cartridge.
Two great games. One Combo Cartridge.
Hang On is the 3-D motorcycle race game that's taken the arcades by storm. Race through grasslands, seasides, valleys, nighttime city scapes and, of course, motorcycle racecourses.
This game is so fast it even gives you special techniques like Hang-on and Countersteering for taking the corners.
Safari Hunt is the most complete jungle game ever created. Scramble through thick rain forests. Jump over gulping bogs. And watch out for the alligators. Because they're watching out for you."