A free & open-source 2D sprite editor, made with the Godot Engine
Dust3D is a cross-platform open-source 3D modeling software
Java/JavaFX/Kotlin Game Library (Engine)
3D and 2D game engine written in Rust
RenderDoc is a stand-alone graphics debugging tool
Lightweight, high-performance HTML renderer for game developers
Modern, lightweight and efficient 2D level editor
Full featured MUD server with all the trimmings.
A 16 bit style game on the 16-bit IBM XT.
3D Engine with Blender Integration
Vivid is a modern C++ 3D engine using OpenGL4+
A customizable 3D platform for agent-based AI research
Explore and dissect a complete brain model in VR
8-bit Graphical API for Java
Cross-platform 2D and 3D game engine
Character animation system for games and simulations.
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Realtime 3D engine for game development
Open source first/third person shooter set in real world locations
3D .NET engine for Windows, Linux, Mac