How does SPT work?
Migration in Progress: We are currently migrating the Hub to read-only mode as we transition to our new platform, The Forge. During this process, you may experience intermittent access or limited functionality on the Hub. Once complete, all new activity should take place on The Forge. We appreciate your patience while we complete this migration and look forward to seeing you at forge.sp-tarkov.com.
Spt works by changing the address your Tarkov game client communicates with. By default it talks to BSG servers, we change it to talk to your computer instead.
Once we have tarkov talking to your computer we respond to these requests using our own server (St.Server.exe).
These requests vary from asking for your profile when you log in, to requesting loot data when loading into a map. The SPT server emulates what BSG does.