Local Testing via Unity's Multiplayer Play Mode (MPPM)

MPPM is Unity's official solution for local multiplayer testing, available for Unity 2023.2+.

Pros

• Short iteration times

• Tighter integration within the Editor, doesn't require multiple (standalone) Editors open

Cons

• Requires Unity 2023.2+

• Can be more resource demanding than other solutions - this might change in upcoming MPPM updates

How to use?

• Install MPPM as described in their Installation Instructions

• Open Window > Multiplayer Play Mode

• Enable up to 4 Virtual Players

• Make sure that the bake data is up-to-date before starting to test, and that the Replication Server is running with the latest schema generated by it

• Enter Play Mode

coherence tells apart Virtual Players from the main Editor, so it's easier for you to not edit assets in clones by mistake.

Inspecting a CoherenceSync on a Virtual Player