Let's say you're Toys 'R' Us: you've just declared bankruptcy, and you're looking for something, anything that might convince customers to visit your stores instead of buying all their toys through Amazon. What would you do? If you ask Toys 'R' Us, the answer is simple: make a game out of store visits. The retailer has unveiled Play Chaser, a free augmented reality app for Android and iOS that turns stores into virtual playgrounds. Point the app at star icons in the store and your kids can play basketball (including with others) or take home a digital doll. The brand's mascot, Geoffrey the Giraffe, will even introduce the app and get players started.