Several developers have recreated this massive aircraft for FSX, offering both freeware and payware experiences:
FSX C-5M Super Galaxy - USAF largest military transport aircraft YouTube · fsxtopgun Galaxy C 5 Fsx
A refreshed version that includes dedicated sounds and a specific cockpit setup requiring autothrottle for stability. Several developers have recreated this massive aircraft for
Capable of carrying two M1 Abrams tanks or six Apache helicopters, totaling over 280,000 lbs of cargo. totaling over 280