Open Source Gaming Tools
A curated collection of the best open source tools and platforms for building and playing games, including engines, level editors, asset pipelines, and game servers.
See also:Game Development Platforms
Free 2D and 3D game engine for cross-platform projects
Stars
118,003Last commit
2 hours agoLicense
MIT
Build 2D, 3D, and XR games with a full-featured engine that includes its own scripting language, scene editor, and export tools for multiple platforms.
Open Source Alternative to:
Create 2D and 3D games without coding, powered by AI assistance
Stars
27,008Last commit
3 hours agoLicense
Unknown
Free, open-source game engine with visual event system, AI tutor, and one-click publishing to Steam, iOS, Android, and web platforms.
Open Source Alternative to:
Free, open-source framework for cross-platform game development
Stars
14,474Last commit
5 hours agoLicense
Unknown
Build games in C# that run on Windows, macOS, Linux, iOS, Android, and major consoles. No royalties, no subscriptions, no runtime fees.
Open Source Alternative to:
Build and play games inside a game engine that runs live
Stars
6,480Last commit
2 hours agoLicense
MIT
A game creation platform built on Valve's Source 2 engine, letting you build, share, and play games without leaving the environment.
Open Source Alternative to:
Sent – Messaging Infrastructure for Developers. One API for SMS, WhatsApp, and RCS across 190+ countries.
Sent