Mythos is a multiplayer computer role-playing game that was originally under development by Flagship Studios Seattle, a subdivision of Flagship Studios, a video game company composed largely of ex-Blizzard North employees who were lead producers of the Diablo series. Due to financial issues at Flagship Studios, Flagship Seattle was subsequently dissolved, leaving the intellectual property rights in the hands of the Korean game company HanbitSoft.HanbitSoft’s corporate partners will continue to develop Mythos for a planned release in South Korea and North America.

Mythos is similar in style to Diablo, utilizing a similar interface and perspective, extensive map and item randomization, and a high fantasy setting. Its development was led by Travis Baldree, creator of the action RPG FATE, now a co-founder of Runic Games.

The intellectual property and game assets of Mythos moved into the ownership of South Korean MMO publisher HanbitSoft. In May 2009, Hanbitsoft released a statement on its Korean-language website revealing that parent company T3 Entertainment and T3′s subsidiary Redbana are continuing development of Mythos. Included on the site is a message from a designer identified as “Alboos” who states that they are restructuring Mythos to make it “more suited as an online game.” In August 2009, Redbana/T3 launched an English-language Mythos website with a closed beta registration form. On December 1, 2009, Redbana began occasional daily updates via the Mythos “teaser” website. On April 1, 2011, Mythos began sending out closed beta keys, on April 12, 2011, Mythos began the open beta. While the planned release date is April 28th 2011, those who purchased the box version will get a 2 day head-start which will start April 26, 2011.