RAN Online is a free 3D `campus-based` MMORPG (massively multiplayer online role playing game). The concept is based around several schools competing for control. Developed by Min Communications of Korea, RAN Online has become one of the most played MMORPGs in Malaysia, China, Indonesia, Thailand, Taiwan and the Philippines. It is completely free to play and uses the virtual item asset model.

The plot revolves around four universities: Leonair, Phoenix, Sacred Gate and Mystic Peak. These universities were founded by the Sacred Financial Group. These schools were protected from outside corrupting forces by force fields. One day, Leonair`s force fields failed and the entire population of the school turned into the undead overnight. Students from the three remaining schools are trained in fighting techniques for them to survive outside the safety of their school`s force fields. Outside the school, the students kill corrupted beings and students of other schools, and the plot unfolds through quests.

Players can buy items via the game publisher`s website. Players load up with cards bought at various stores and the credits are used in buying items at the website. These items can be anything from potions, costumes, accessories, weapons, etc. Once bought, these items are sent in their Item Bank wherein the player can remove them any time to be put in his/her inventory. Whilst in the item bank, items with expiry dates will have their timers stopped.

As of February 2007, there are Japanese, Taiwanese, Malaysian, Chinese, Filipino, Thai and Indonesian servers running for RAN online. As of December 19, 2006, the global service has been shut down. According to Alexa.com, the Filipino RAN Online Philippines version has become the no.2 (next to Ragnarok Online) Massively Multiplayer Online Roleplaying Game in the Philippines. Concurrent users have reportedly peaked at 30,000 and still rising.