timppu: It is (or at least used to be) anti-cheater program for online games. I recall it from the times of playing Quake TeamFortress online, back when Steam wasn't yet a thing. I didn't realize it is still alive as all these online services seem to have their own anticheat systems nowadays (like VAC for Steam).
Do some GOG games really come with Punkbuster? I don't recall seeing any GOG game trying to install it yet, but if some GOG game tries to install it, I presume it is not needed if you are not going to play online.
I might try to install those three games to see if they really try to install Punkbuster.
A Story About My Uncle
Fallout 3
Fallout New Vegas
LinuxPusher: My internet speed is slow but I will strongly consider uninstall and fresh install thank you for the suggestion.
I installed those three games on my PC (using the offline installers, I don't use the GOG Galaxy client at the moment), and none of those three installed PunkBuster for me. Fallout games installed some Microsoft Visual C++ versions that the games apparently need.
HOWEVER, when I googled for "site:gog.com punkbuster", I did find some older GOG discussions that suggested some GOG games may have installed punkbuster, at least at some point of time. So I don't know if there are some GOG games that would install it, or whether it is Galaxy that installs it.
LinuxPusher: The 2 Computers in question this one is windows 10 the other windows 7 would that cause an issue with games working if II copy from one pc to the other using an external Hard drive?
Don't copy the installed game files, copy the standalone (offline) installers. Then install the games with them to the other PC.
I tried installing them on Windows 7. I don't know if those three games have any issues on Windows 10.
LinuxPusher: O.T ,... I really wish All games were made for Linux.
I wouldn't mind it (I'd like to play more on Linux), but it isn't like Linux gaming is trouble-free either. Dependencies dependencies, libraries this and that...
Quite many of the GOG (and I presume Steam) Linux games are Windows versions running on Wine. I couldn't get e.g. the GOG (Linux) version of Two Worlds to run on the newest Linux Mint, there was some library mismatch. The "Linux version" runs in WINE.
I had better success installing the GOG Windows version of the game to WINE myself, but it is silent, for some reason I didn't get sound to work. Maybe my WINE installation is somehow screwed too, it always says "these will not be updated but will be kept back" for some WINE packages, when I run sudo apt update/upgrade.
I haven't had enough motivation to try to fix that, I'll play that game on Windows instead.