Is there a way to tell which files after a GOG game is installed are the files placed by GOG to get older games to run on newer systems? I've recently set up an old windows 95 machine and the older games I've purchased on GOG I would like to load, but being as they are going to be running in their native environment I won't need any of the compatibility files. Is there a way to get rid of these extra files?

My main reason for this is to clean up game folders and get extra room as I'm running Windows 95 on a Raspberry Pi 2 which is using a 8GB SD Card and I don't have a whole lotta room.

Thanks a bunch!

Whether or not you can identify the GOG files (most will have obviously different modification dates or show GOG as their source), the games are unlikely to work without the original installers to write the appropriate registry entries in Win 95. You can probably find those entries in the current Windows registry, then manually edit them into the 95 registry, but that is a giant PITA.

On a side note, Win 95 on a Pi? You can't possibly be running it natively (Win 95 can't recognize the hardware), so it must be some kind of VM. If so, I seriously doubt it has the necessary hardware emulation to give 95 any serious gaming ability.

EDIT - The more I think about this, the more impossible it sounds to me. Removing GOG's compatibility work will also remove a ton of things that replaced the original DRM and certain hardware functionality that many of these games require and will never be provided by the Pi. Basically, the only games I can see this working with easily are the emulated games that run in DOSBox and ScummVM, which don't need 95, you can just run the Pi versions of DOSBox and ScummVM natively on the Pi.

Probably be really really slow... Usually CPU emulation is 200x slower than normal, although dynamically recompiling to native code may work to speed things to a more manageable level.

If GOG made any compatibility changes to vital files such as the game's exe, then there isn't much to remove. However as cogadh said regarding DOSBox and ScummVM, you can reconfigure those games to play them without DOSBox. DOSBox by itself is about 20-30mb big if I'm correct, removing that per each dos game would save you some space.