Microsoft Flight requires GFWL. The gift items are steam tradeable. Once redeemed, a CD-key is offered that you must enter into GFWL account to activate the DLC. The base game is F2P and is offered as a free download on Steam. These DLC will unlock all regions and airplanes in the game.
If this thread is open, I still have the following offer available:
This is the complete game.
Have (7 Steam Gift Items)
Want
Microsoft Flight requires GFWL. The gift items are steam tradeable. Once redeemed, a CD-key is offered that you must enter into GFWL account to activate the DLC. The base game is F2P and is offered as a free download on Steam. These DLC will unlock all regions and airplanes in the game.