The best competitive two-player games are the ones where you don’t have to even learn the rules because the concept is so simple and obvious – and this is definitely the case with Get on Top. The aim of the game is to knock your opponent over and climb on top of them by shifting your weight backwards, forwards, up and down. The graphics are simple and straightforward, but it's an incredibly addictive game once you start playing – it's a great way to spend some time with a friend on the bus or train