Apple App Store
Why can I not find or purchase command and conquer generals on the Apple App Store?
iMac Pro, macOS 10.15
If you don't find an app or game in one of the Apple device App Stores, then the developer has chosen not to offer their property through Apple. Or at least not in the country in which you are located.
ASC - Late 2012 Mac mini, macOS 10.15.5; Watch, series 5 GPS/cellular, watchOS 6.2; iPad Air 2, ipadOS 13.5; iPhone 8+, iOS 13.5; TV 4th Gen, tvOS 13.4.5; HomePods, audioOS 13.4.5 and Airport Express w/ Airplay 2