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A technical three-way we get asked for: Reactor vs Photon Fusion 2 vs Coherence. Server authority, bandwidth per entity, hosting costs, and complexity at scale... #gamedev #unity3d

3/9/26, 2:00 pm1 repost6 likes

KinematicSoup Technologies

@kinematicsoup.com

3 Sept

They differ most in what happens as your game grows: how the authority model holds up under load, what each entity costs on the wire, and how the pricing scales with concurrency.

KinematicSoup Technologies

@kinematicsoup.com

3 Sept

The full comparison, criteria first: kinematicsoup.com/blog/reactor-vs-coherence-unity-multiplayer