The upcoming game inspired by Frank Miller's beloved Sin City graphic novels is no longer being developed by Transmission Games, publisher Red Mile has revealed.

The Unreal Engine 3-powered title actually shifted development houses "quite a long time ago," a Red Mile representative informed GameSpot, though they offered no details on the current developer. "Transmission is focusing on Heroes Over Europe, which is quite an important title for us."

Formerly known as IR Gurus, Tranmission has helmed such titles as Lucinda Green's Equestrian Challenge (PC, PS2), Heroes of the Pacific (PC, PS2, Xbox) and Heatseeker (PS2, Wii, PSP). Its latest flight action game, Heroes Over Europe, is slated to hit PC, PlayStation 3 and Xbox 360 next year.

Few details on the Sin City game have surfaced since its initial announcement last May. The use of Unreal Engine 3 suggests PC, PS3 and Xbox 360 editions are likely, though reports have since indicated the title may also hit Wii, but not PC, by Christmas 2009.