Passport
Auth, account linking, and cross-saves across PS5, Xbox, Switch, PC, Mobile, Web — in one module. Conflict resolution UI your players can actually read. Offline-first, version-aware, one SDK call.
What Passport does.
Auth without Cross Saves is just login. Cross Saves without Auth is impossible.
Authentication
Steam · PSN · Xbox Live · Nintendo · Epic · Apple · Google · Discord · Twitch · email · guest · webhook. JWT, rate limiting, GDPR / COPPA.
Cloud state
Progress tied to the player, not the platform account. Selective sync. Offline-first, CRDT-style conflict merge.
Cross-platform glue
Purchases, achievements, friends, leaderboards — they follow the player across devices. Unified view, platform-specific fan-out.
Conflict resolution players can read
"Level 42 (PS5, 3h ago) vs Level 40 (Xbox, yesterday). Keep which? Or merge?" Not a cryptic PS3 save-file window.
Version-aware migration
v2.1 on PC, v2.0 on Switch — Passport transparently migrates old saves into the new schema, in-flight.
Every platform, day one
All six platforms, eleven providers. Auth without Cross Saves is just login; we ship both.
Talk to us. 20 minutes.
Bring your stack diagram or your migration spreadsheet. We'll show you where PlayServ slots in.