DFO meaning in Computing ?

Dungeon Fighter Online, also known as DFO, is a multiplayer beat 'em up action role-playing game, developed and published for personal computers by Neople, a South Korean subsidiary of Nexon, and originally published by Hangame in 2005. The game was originally released in South Korea as Dungeon & Fighter (던전앤파이터) and in Japan as Arad Senki (アラド戦記, Arado Senki, lit. War Records of Arad). In China, the game is published by Tencent. In 2014, Neople began an alpha test of a global version of Dungeon Fighter Online using the last English version hosted by Nexon, which has since ended.

DFO is one of the most-played and highest-grossing video games of all time, exceeding a total of 700 million players worldwide and having grossed over $15 billion in lifetime revenue as of May 2020. This also makes it one of the highest-grossing entertainment media products of all time. The game has received Japanese anime and manga adaptations.