Scalable open-source game backend server: multiplayer, matchmaking, leaderboards, chat, and social features for games.

The Unity SDK for LootLocker

Game backend platform built on Nova/OTP

Fab.io is a lightweight game backend framework written in Go (Golang).

Minimalistic backend service for Unreal Engine, made with Unreal Engine

This is the SDK (Software Development Kit) for interacting with LootLocker's powerful systems from your Godot game. It is a pure GDScript code package provided by the LootLocker team. LootLocker is a game backend-as-a-service that unlocks cross-platform systems so you can build, ship, and run your best games.

Croupier is a universal GM (Game Master) backend system designed for game operations. It supports integration with multi-language game servers and provides a unified management interface along with powerful extensibility.

Game Microservice In Action blog sample code

PaaS solution for deploying and managing serverless game backends

🚀 Modern TypeScript backend for web games with Fastify, tRPC & Prisma. Features magic link auth, type-safe APIs, and game-ready architecture.

Defold client SDK for Asobi game backend

The gamedo is a distributed backend game server framework(under planning and developing).

MatchKernel is a backend-driven matchmaking engine built in C++ that groups players by skill rank using queues and matches them through a multi-phase algorithm. Features dynamic rank expansion for long-waiting players, a REST API via cpp-httplib, and a real-time dashboard frontend in vanilla JavaScript.

Moved to https://github.com/rivet-gg/modules

Persistent world memory engine for games. Chronos lets NPCs remember events and evolve behavior over time.

The all-purpose .NET monoservice for the Beyond Immersion game servers.

Defold arena demo for the Asobi game backend

A playable dungeon crawler controlled entirely through HTTP requests (Flask + SQLite).

AI-driven DnD game backend built with FastAPI and DeepSeek, designed for modular event protocols and rapid MVP iteration.

Asynchronous Turn-Based Game Backend - WIP