If you're specifically looking to play GTA SA on an Apple device without a cost, consider checking for any promotional offers or free trials directly through the App Store. Otherwise, creating a free Apple ID can give you access to various free services and apps, and you can always purchase GTA SA or other games through your Apple ID.

Even if you manage to log into a shared Apple ID and download the game, you won't own it. Because the purchase is tied to the stranger's ID, you cannot update the game. When iOS 18 or 19 drops, the app will crash on launch due to certificate expiration. Furthermore, if you use iCloud backup, your save files (CJ’s gym progress, territory control) might get mixed up with the shared account’s saves, leading to corrupted data.