McDonald's in Sweden are letting you take over a billboard with your smartphone. The fast food chain has turned a billboard in a popular area into a giant game screen. Passerbys can access the billboard via an application of web browser on their smartphones, and play a game against another local on the billboard for 30 seconds. Winners of the game receive free McDonald's food at the chain's nearest location.

What do you think? Would you play the game if you were walking by?