Hey! What are computers really for? We all know the real purpose is for playing games. Look at any area of computer science research and you will see the real purpose is to make bettter computer games. AI? Smarter opponents in strategy games. HCI? Making games easier to play. Networks? Better support for networked games. VR? Designed for games. The Web? Is itself a game.
So this category empowers us to visualize the paradigm. (Sorry, I was just playing the "see how many overworked buzzwords you can get in one sentence game".)