Ultra-Low Bandwidth

Reactor is designed to minimize bandwidth, reducing object updates to bits instead of bytes. This means bigger worlds with crowds of thousands of entities. It also means reducing bandwidth-related costs and shorter development time. See this benchmark for a comparison.

Persistence

Rooms can run reliably for months on end, only requiring restarts when system-level updates are required. Data persistence is offered via the Reactor Cloud.

Server-Based Input Processing

Client inputs can be synchronized over the network and incorporated into the simulation server-side, while at the same time providing instant feedback on the client. This enables games with fully interactive physics that breaks rollback and re-simulation.

High Performance

Network controllers can be optionally multi-threaded on the server-side to handle extremely high CCU and high performance. Serialization and networking is multi-threaded to provide the best possible performance and lowest possible latency.

Server Authority

Fully scriptable rooms store world state and synchronize it to all clients automatically. Physics and scene queries are available server-side to validate and simulate client inputs.

Motion Interpolation

Object motion is smoothed automatically no matter the server tick rate or network conditions. Smoothing reacts automatically if the server is slowed to minimize the appearance of issues and mask temporary poor network conditions.

Predictability and Flexibility

Objects creation, removal, RPCs and events are well-ordered - occurring in the same order between the server and client for complete control and predictability.

Tick-Based Simulation

Server-side code runs a tick-based simulation, with world snapshots being synchronized to all clients automatically. Simulation rates up to 120hz are supported, and network tick rates can be adjusted separately to tune for bandwidth and fidelity.

First-Class Integration with Unity

Tooling for Unity Engine enables easy development with full code separation between client and server. Reactor extracts the object, collider, rigidbody, and physics data necessary to perform simulations and scene queries server-side.