Awful!!
The graphics are rather poor; Scooby Doo reverts back to facing right when he's standing still, and there's no sense of momentum; Scooby has running and standing, but no acceleration or sliding. The rocks are also way too big, making the collision detection much too sensitive. On top of that, THERE'S NO WAY TO KEEP TRACK OF YOUR SCORE! That means there's absolutely no point at all to this whole game. Not to mention the sound effects are obnoxious, it needs music, and the whole thing is way too short.