Official download
The official site lists PC, PS5, Android and iOS. Its PC download instructions use GRYPHLINK: open All Games in the launcher and select Arknights: Endfield. They distinguish the old test launcher from the release client. On PS5, check the base game in PlayStation Store; on mobile, use the store linked by the official page. An add-on or test client is not the current full game. Check requirements and download size for the current version rather than relying on January launch pre-download figures.
Existing PC or mobile progress
The official FAQ allows an existing Gryphline Account to link to a PSN account that has never logged into Endfield. For the first PlayStation launch, use the linking prompt if that scenario applies to you. Quick login instead automatically creates a new Gryphline Account; that PSN account cannot then simply link to another already registered account. Before choosing, identify the account containing your desired progress. These conditions do not promise to merge two profiles that have already started playing.
Same server, different login methods
Synchronization works within the same server. Asia and Americas / Europe do not share account data. On PS5, the server is assigned from the PSN region; the FAQ does not support manual selection. PC, iOS and Android use a Gryphline Account, while PlayStation uses the linked PSN account. Record the server and check the linked pair rather than similar display names. Cross-platform progress is not cross-server progress.
If you started on PS5
For a PSN account that has already logged in, the FAQ describes Settings → Platform & Account → User Center → Link Email using an email not yet registered as a Gryphline Account. Do not substitute a second existing profile with different progress. Check linked details in User Center. The FAQ limits unlinking to once per account, so do not use it as a routine test. If a profile unexpectedly appears empty, first record the device, server and login method and compare the official linking scenario.
Sources and checks
Guides are automatically translated from Russian; interface labels may differ. The Russian edition is the original.
