RuneSoft, a company that specializes in porting games to Linux platform, has released Cultures: Northland real time strategy game on Desura.
This is the third title they have made available for digital download. Previously, they have released 'Robin Hood: The Legend of Sherwood' and 'Airline Tycoon Deluxe' on both Desura and Ubuntu Software Center.
Cultures: Northland is inspired by The Settlers game series. Check out a gameplay video:
The game can be purchased for $15 from Desura.