Rivalis

Spec sheet

Purpose

Rivalis is an open-source Node.js framework for building real-time multiplayer games and apps.Read 7 Oct 2026 · rivalis.dev

Integrations

The site names Phaser, PixiJS, Three.js, and Babylon.js as game frameworks Rivalis can support, and describes integration with any Node.js http.Server.Read 7 Oct 2026 · rivalis.dev

Support

The author invites feedback through GitHub issues and says the project is early but stable and seeking API-ergonomics feedback.Read 7 Oct 2026 · rivalis.dev

License

Rivalis is released under the MIT License and the site says it is free for commercial use.Read 7 Oct 2026 · rivalis.dev

Authentication

Pluggable authentication can validate JWTs, session tokens, or other tickets and attach typed actor data.Read 7 Oct 2026 · rivalis.dev

Core model

It models applications as rooms containing actors, with topic-based broadcast and unicast messaging.Read 7 Oct 2026 · rivalis.dev

Fleet

The fleet package places rooms on the least-loaded server in a cluster using an in-memory view that requires no database.Read 7 Oct 2026 · rivalis.dev

Limits

The site says fleet orchestration places rooms on servers already running; machine scaling and matchmaking are left to the user's platform and application.Read 7 Oct 2026 · rivalis.dev

Reconnect and reliability

The framework includes exponential-backoff reconnect, heartbeats, and backpressure.Read 7 Oct 2026 · rivalis.dev

Security defaults

The site states that origin allow-lists protect against CSWSH by default, with a 64 KiB frame cap, 30-per-second token-bucket rate limit, and 30-second heartbeat.Read 7 Oct 2026 · rivalis.dev

TURN relay

For peer connections that cannot be established directly, the site describes using coturn as a relay and says the signal server mints short-lived TURN credentials.Read 7 Oct 2026 · rivalis.dev

Use cases

The site presents game servers, live apps such as whiteboards and chat, and real-time operations such as auctions and IoT panels as use cases.Read 7 Oct 2026 · rivalis.dev

WebRTC

Its WebRTC peer-to-peer transport supports mesh, host-star, and host-authoritative topologies; the site recommends authoritative servers for competitive games.Read 7 Oct 2026 · rivalis.dev

Wire protocol

Rivalis uses a typed binary topic-and-payload protocol shared by clients and servers.Read 7 Oct 2026 · rivalis.dev

Plans and prices

Every Rivalis plan and price →

Where Specifiction places it

• Game Server Orchestration Software#20 of 237.2