Campaign
In the PC version of Gears of War, there are five added chapters to Act 5: Desperation which take place before the original release's Special Delivery chapter. In the fifth added chapter Jurassic Proportions, the player fights a Brumak; the Brumak will "be stalking you, and there is no chance of pressing Q or X as you will need all the time to Roadie Run away, and any cover you posses will be demolished by the Brumak.
Multiplayer
In addition to the 16 multiplayer maps already available for Gears of War, the PC version includes three new maps: Courtyard, Sanctuary, and Gold Rush. These three maps are also now available on Gears of War 2 through that game's Snowblind, Dark Corners, and Combustible Map Packs respectively. It does not support cross-platform play between the PC and Xbox 360, however.[2]Â