Online gaming is a technology rather than a genre, a mechanism for connecting players together rather than a particular pattern of gameplay. Online games are played over some form of computer network, now typically on the Internet. One advantage of online games is the ability to connect to multiplayer games, although single-player online games are quite common as well. A second advantage of online games is that a great percentage of games don’t require payment. Also third that is worth noting is the availability of wide variety of games for all type of game players. Some of the more recent ones are diablo3 and the yet to be released Mists of Pandaria. Popular online games are commonly bound by an End User License Agreement (EULA). The consequences of breaking the agreement vary according to the contract; ranging from warnings to termination, such as in the 3D immersive world Second Life where a breach of contract will append the player warnings, suspension and termination depending on the offense. Enforcing the EULA is difficult, due to high economic costs of human intervention and low returns back to the firm. Only in large scale games is it profitable for the firm to enforce its EULA.