It seems like a simple question: What is a game? But when you think about it, there are many variations of what is called a game: Simple activities like tic-tac-toe, card games like Go Fish or poker, and board games like Monopoly and Stratego. Mobile games like Angry Birds and console games like the Assassin’s Creed series. Even large-scale, complicated computer-generated game worlds like World of Warcraft or EVE Online and live sports games like soccer or lacrosse.