"Shooters and sports games. RPGs and racers. Strategy and simulation, action and adventure. The lines may blur but for the most part you know where you are with these. If a game's got guns, cars, football or wizards, it's easy to see where it fits.
But what about the other stuff? What about the games you could argue aren't games at all, like Maths Training and Wii Fit? What about PlayStation Home? LittleBigPlanet? Obscure Independent Games Festival competition entries?."