Most of you out there have probably heard of Petroglyph and Sega's upcoming project Universe At War: Earth Assault, which is a 3D RTS set for release on the Microsoft Xbox 360 and the PC later this year. It tells the tale of Earth's desperate plight to resist an alien invasion that's poised to strip-mine the planet of its natural resources.

This video has the devs talking about what the three factions in the game have to offer. All of them are said to play differently, making for some serious time before you master their tactics.

Also revealed in the clip is the fact that Universe At War: Earth Assault draws some inspiration from the immortal Starcraft by Blizzard. Petroglyph hopes to blend some of its elements with their original work to create a hybrid that will offer the RTS crowd new nooks and crannies to explore. A public beta is set to commence in October, so be sure to sign up for that.