Couple of caveats. The launcher scans your game installation files for mods, so if you've ever been money-drop-trolled in GTAV it'll detect the modified cash code and flag a warning about the possibility of being banned for running mods in online.
Also, GTA San Andreas runs easy enough, but the colour pallette (on my system anyway) seems to lean predominately browns & greens. They've done a good job of mapping current controllers (I use a third-party xbox one controller) but unless you have a sheet telling you which button is Joy1, Joy2 etc, it can be a bit confusing.
Still, free, so can't complain
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