Using entertainment or diversions, such as video games, to remove oneself mentally from the real world.  Escapism can be long or short term, vary in intensity and occur for many different reasons–including boredom, a dissatisfaction with life, or simply a desire to experience something impossible.

Grand Theft Auto is an easy scapegoat for people hell-bent on pinning violent behaviour on video games, but evidence suggests these types of games are more about escapism than wish-fulfilment.”