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GOG Galaxy vs Steam: catalog facts
GOG Galaxy	Steam
Free Free client; games are purchased individually.	Freemium The client is free; games and other content are bought individually.
Windows, macOS	Windows, macOS, Linux, Android, iOS
DRM-free games with no launcher requirement once downloaded Can unify libraries from multiple other platforms in one view	Native client for Windows, macOS and Linux Large store with free and paid games
Cross-platform library integrations rely on unofficial connectors that can break Smaller game catalog than Steam or Epic on its own	Requires a Steam account Closed source
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.