As usual, you can win prizes by either getting an instant-win piece or by collecting the appropriate game piece sets.
This year, you'll find game pieces on the Premium McWrap, Bic Mac, Bacon Clubhouse Sandwich, Filet-O-Fish, 10- and 20-piece Chicken McNuggets, Medium (16 oz.) and Large (20 oz.) Hot McCafe Beverages, Fruit & Maple Oatmeal, Hash Browns, Egg White Delight McMuffin, Egg McMuffin, Sausage McMuffin with Egg (but not the plain Sausage McMuffin), Large Fries, and Medium (21 oz.) Fountain Drinks.
If you're looking to get as many game pieces as possible, most items are good for two stamps each, but the Large Fries gives you four stamps.
You can find the full rules for the game at www.playatmcd.com.
Photo by McDonalds.