Red Faction: Guerrilla has finally made the transition to Steam and ditched Games for Windows Live.
The new version includes DirectX 11 support, Steam Trading Cards, six new Wrecking Crew maps and several other changes that come with the move to Steam Works, such as improved multiplayer and voice support.
You can even migrate your save files from GFWL to Steam.
Developer - and current IP holder - Nordic Games has posted the full detailed list of changes. Guerrilla, along with the whole Red Faction collection, is currently on sale.