AdventureQuest

AdventureQuest (also referred to by its website name BattleOn or abbreviated to AQ) is an online flash based single-player role-playing video game started in 2002 and currently developed by Artix Entertainment.

A one time "guardianship" fee was introduced in 2003, allowing the player to access more game content. Ownership of the game transferred to the newly formed Artix Entertainment in 2004, and a server population cap was added for non-Guardian players in May of that year. In 2005 a microtransaction system was put into place. In response to criticism that server restrictions made logging on for non-paying players difficult, in October 2006 Artix Entertainment introduced a server in which a player could log on at anytime but had a tight level limit. As of July 14, 2010, the server cap has been removed.