Mythos is an online, action role-playing game that is free to download and free to play. Set in the land of Uld – a fantasy world arising from the ashes of an epoch-long war of darkness – players assume the roles of fantasy heroes as they explore, adventure, and quest through entirely randomized dungeons and environments. With an elegant point-and-click interface and an accessible "isometric" perspective, Mythos is poised to have near-universal appeal. The game allows thousands of players to interact within the same world while using mostly "instanced" dungeons to create unique gaming experiences suited for both solo and group-minded players.

As players journey into Mythos' ever-expanding universe, they select one of four races (Human, Satyr, Gremlin, or Cyclops) and opt to play as a particular character class using a huge variety of skills and items. Through heroic quests players search for gold, gems, armor, and weapons, while unlocking the secrets of Uld. Mythos presents a constantly expanding, continuously updated world where something new lurks around every corner.

Mythos will be available to download for free in English, German, French, Polish, and Turkish. Alongside the free download version, a box version of the game will also be available in stores for £9.99 (RRP). Those who pre-order the box version will be able to play Mythos from the 26th of April, three days before the official release. They will also receive further bonuses such as an item package worth 10 Pounds and an exclusive virtual companion.

The Open Beta phase will then begin on the 12th of April, during which the level cap will be raised from 27 to 50, and a new region, Umbral Peaks, will be introduced.