Free Game Development Tools

Flax - Flax Engine
Best development performance out there Unleash your creativity and be more productive. With Flax you can boost your game development and bring it to another level. We’ve created tools that are slim and agile. No Read more…
Godot Engine - Free and open source 2D and 3D game engine
Godot provides a huge set of common tools, so you can just focus on making your game without reinventing the wheel.
Home - O3DE
MEET O3DE The open source, real-time 3D engine DOWNLOAD Learn More
Defold - Official Homepage - Cross platform game engine
Defold is a free and open game engine used for development of console, desktop, mobile and web games.
GitHub - id-Software/Quake-III-Arena: Quake III Arena GPL Source Release
Quake III Arena GPL Source Release. Contribute to id-Software/Quake-III-Arena development by creating an account on GitHub.
GitHub - stride3d/stride: Stride Game Engine (formerly Xenko)
Stride Game Engine (formerly Xenko). Contribute to stride3d/stride development by creating an account on GitHub.