A Massively Multiplayer Online Game (MMOG or MMO) is a computer game which is capable of supporting hundreds or thousands of players simultaneously, and is played on the Internet. Typically, this type of game is played in a giant persistent world. MMOs can enable players to compete with and against each other on a grand scale, and sometimes to interact meaningfully with people around the world. Most MMOs require players to invest large amounts of their time into the game. Many MMOs can be found free on the Internet.