Now THIS is a nice piece of loot.
This is "Sonic the Hedgehog Mountain Quest". This big, 3D game is somewhat like an interactive maze. You fiddle with different controls, trying to get the ball up to the top of the game. (buttons, springs, levers, knobs, noises etc) It is 1 player, and may be timed.
This game is actually a Sonic-ized version of a concept. There are other similar games with different names such as "Run yourself Ragged" and "Hazard Mountain" which are just generic. They have different obstacles, though, and a totally different look.
This interesting, complex game is a wonderful addition to your collection. So unique!