Can Xbox 360 and PS3 Players Play Together Online?

No, Xbox 360 and PS3 players cannot play against each other online. This limitation exists because both consoles operate on completely separate online ecosystems—Xbox Live for Microsoft and PlayStation Network for Sony. Games are designed to connect only within their own respective networks.

Why Cross-Play Isn't Possible

The fundamental barrier is architectural: Xbox Live and PlayStation Network use different protocols, authentication systems, and server infrastructures. During the seventh console generation, platform holders maintained strict walled gardens, and developers had no tools to bridge them.

Modern Exceptions

Cross-platform play became feasible in later generations:

• Xbox One/Series X|S and PlayStation 4/5: Many modern titles (Fortnite, Call of Duty: Warzone, Rocket League) support full cross-play between these platforms, typically announced and managed by the game developer.
• PC and Console: Games available on both PC (Steam, Epic Games Store) and consoles often enable cross-play between those platforms.

Unless a specific game explicitly advertises cross-play support between Xbox 360 and PS3—which none do—online multiplayer between these two consoles remains impossible.