// the find
naia-lib/naia
a cross-platform (including Wasm!) networking library built in Rust. Intended to make multiplayer game development dead-simple & lightning-fast
naia is a server-authoritative entity replication library for multiplayer games in Rust, targeting both native UDP and browser WebRTC (via WASM). You define a shared Protocol at compile time, and naia handles diffing and delivering component state changes to the right clients. Aimed at indie game developers who want netcode that isn't just raw message passing.
The compile-time Protocol hash handshake that rejects mismatched client/server builds is a genuinely good safety net — catches version drift that would otherwise produce silent corruption. The room-based scoping model (user + entity must share a room before replication begins) is the right abstraction for MMO-style zone management and prevents naive broadcast-to-everyone mistakes. TickBuffered channels that deliver client input at the matching server tick are essential for rollback netcode and are here out of the box, not bolted on. The ECS-agnostic core with first-party Bevy and macroquad adapters means you're not forced into Bevy just to get networking.
Client-side prediction and interpolation are explicitly not provided — naia gives you the data feed, you write the prediction loop yourself. That's a significant amount of work that lightyear handles for you, and for most games that's the hardest part of netcode. Mobile (iOS/Android native) is blocked with no timeline — the WebView workaround is a real limitation for anything that needs low-latency input. Only 1138 stars and 65 forks after what appears to be years of development; the community is thin, which means debugging weird replication edge cases will often land you in uncharted territory. The `_AGENTS/` directory full of AI agent planning files is a yellow flag — suggests heavy AI-assisted development, which correlates with documentation that looks thorough but hasn't been stress-tested by real users.