Supported OS: Windows 7 SP1, Windows 8/8.1 (64-bit versions only) Some basic help that might not apply to you, but certainly could be causing it to not install/run: Okay, the main story for FC3 wasn't very good, but the casual gameplay was great.Īnyway, nosteam's FC4 worked flawlessly for me. An extreme disappointment after some the good things that FC3 had to offer.