“GOG is the most customer-friendly, with better refund policy, meaningful ownership of games through DRM-free installers that you can back up.” Reddit · 4 months ago

What's the difference between steam and GOG? : r/gamingsuggestions

The GOG version is highly compatible with the "SS2 Tool," which facilitates the installation of high-resolution texture packs and "Nightdive’s Enhanced Edition" features. Completion Time

Gamers often debate whether to use Steam or GOG for older titles like this.