They have been teasing us for months but today developer Petroglyph (developers of Star Wars: Empire at War and Universe at War: Earth Assault) and publisher True Games Interactive finally reveal the first details on their upcoming micro-transaction based MMO game. The game itself is called Mytheon and is being designed as a mix of action, strategy and RPG genres.

As the name suggests, Mytheon will be using the myths of ancient history as its basis with Petroglyph planning to bring in mythologies from around the world for content in the game. When the title first releases in the fall of 2009 it will concentrate on the Greek myth canon with expansions adding more myths from other cultures. The game will feature solo, group and PVP gameplay modes with what the press release calls "real-time combat and extensive customization features"

The press release states that Mytheon players " ...will collect and customize a vast assortment of 'Power Stones' which are used to conjure devastating spells and summon faithful minions in climactic battles against monsters and other players. Mytheon will offer three distinct character classes, each specializing in a specific 'Power Stone' type, such as summoning or healing."

Want to learn more about Mytheon? Then stay tuned as Big Download will have an exclusive interview with True Games' Peter Cesario later this morning.