Are games that use STRIX capable of cross-platform multiplayer?

Yes, it is possible. In STRIX, both servers and SDKs have compatibility over client platforms. As long as they use the same game engine, it is possible to provide cross-platform multiplayer.

Please note the following point, however:

• If you provide cross-platform multiplayer over a set of platforms including Unity’s WebGL platforms, you need to use a secure or regular WebSocket protocol on all platforms consistently.