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Porting Kit vs Shadow: catalog facts
Porting Kit	Shadow
Free Free to download; some games in its catalog must be bought separately.	Paid Paid subscription; the homepage showed a discount offer.
macOS	Windows, macOS, Linux, Android, Web
Prepared installers for Windows games on macOS Catalog of games that can be filtered by genre, source and price	Full Windows PC, so any launcher, mod or app can be installed Clients for most desktop and mobile platforms plus a browser
Compatibility depends on Wine, so not every game works Mac only	Ongoing subscription cost Needs a fast, stable internet connection
Downloadable app	Downloadable app, Web application, Hosted service
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	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 24, 2026

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