Ubisoft's upcoming RTS R.U.S.E. On PC won't make use of the publisher's controversial DRM protection - it hit the headlines for the wrong reasons back at the launch of Assassin's Creed II.

Instead the game will be supported by Valve's Steamworks API.

"When R.U.S.E. is released in September, it will benefit from Valve's Steamworks API to offer the best community experience to players," explained the publisher on the game's forums. "Consequently, a Steam account and Internet connection will be required to activate the game, as per Steam policy. For this reason, R.U.S.E. will not use the Ubisoft protection. Single player can be played offline."

R.U.S.E. is scheduled for release on September 10 for PC, PS3 and Xbox 360.