The game is a puzzle game. Before starting an errand, list down the items on the shopping list so you won't forget what you'd be buying; you only need to buy one item per shop. Then guide Snoopy using the arrows. Be very careful not letting him go off the road or get scrolled out or he'd die. Make sure he won't get distracted by clowns and other suspicious stuff on the way or you'll lose time and shopping item limit.
The game has 45 stages (or errands).