Online multiplayer requires a compatible path between the exact versions your group owns. Cross-play, cross-progression, cross-save, and cross-buy describe different capabilities. Start by identifying which one you actually need.
What to compare
Platform matrix
Check every participant platform and game edition against the official supported combination. A feature on one pair of platforms may not apply to another.
Accounts and invitations
Verify account linking, friend systems, communication settings, and age-related controls for the intended group. Plan who creates and joins the session.
Progress and purchases
Treat shared progress and shared ownership as separate checks. Confirm whether saves, characters, add-ons, and purchased items carry across.
A detail worth checking
A broad cross-platform statement can hide mode, region, server, or edition restrictions. Read the current support page for the specific activity you plan.
Make your next session easier
Create a small group checklist listing platform, edition, required account, and supported mode. Test an invitation before buying extra copies or planning a long event.

