Karos Online is a brand new free-to-play fantasy MMORPG developed by Galaxy Gate (lead developers of Laghaim and Last Chaos), to be published by NHN. In Karos Online, players take the role of a hero determined to defeat the curse of darkness falling over the world of Asmara, and ascend to ultimate glory by becoming the mythical Karos warrior. Through questing, guild clashes and mass PvP, they enter the fight for domination over the world's vital energy source, Fletta. Fletta gems provide the basis for the game's unique and complex alternate progression system; alongside traditional leveling within the game, Fletta energy can be used to increase stats, give buffs, buy resources and enchant items.

With a strong RPG component, wide range of class skills and fantastic visual combat effects, Karos Online offers a rich player experience and an exciting end-game for guilds, including castle sieges and resource control points. There are a variety of dynamic dungeons to explore, with shifting paths and surprises to challenge players as they progress in level. The economy is well-developed, with mining, fishing and crafting elements and a consignment system for storage. Karos Online offers rare graphical quality for its small client size, and will be accessible to a vast range of computers with minimal requirements.