Cross-platform play is the ability to allow different gaming platforms to share the same online servers in a game, allowing players to join regardless of the platform they own.
Since the Dreamcast and PlayStation 2, there have been some online video games that support cross-play.
Listed here is an incomplete list of games that support cross-play with their consoles, computers, mobile, and handheld game consoles note when using.
While PC versions for games on Microsoft Windows, Linux, or MacOS that have cross-platform support.
Steam has support for them in use like the Steam Deck but it could be considered not cross-platform as those are only compatibility layers from Windows except certain games with Anti-Cheat that do not work.