Online role-playing games (RPGs) such as World of the Warcraft and MapleStory hit the Web like a storm and you will be surprised to know that some of these free online mind games are actually neck-to-neck with these popular role-playing games. The reason why mind games are as popular as RPGs is simply because these sort of games are more suited for all groups of age and also some of these games are time based and it allows the player to try out over a dozen of games in a day. RPGs however, might take a couple of months or so to complete.