Self-hosted game stream host for Moonlight
Free game engine for development of desktop, mobile, and web games
The Playstation 2 emulator
Custom launcher for Minecraft to easily manage installations
The game engine for everyone
DOSBox Staging is a modern continuation of DOSBox
Custom launcher to manage multiple installations of Minecraft at once
Compatibility tool for Steam Play based on Wine and other components
Voxel game engine in C++ with OpenGL
Lossless Scaling Frame Generation on Linux
Fast PlayStation 1 emulator for x86-64/AArch32/AArch64
GZDoom is a feature centric port for all Doom engine games
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
An open source flight dynamics & control software library
Cross-platform 2D and 3D game engine with modular architecture
An efficient graphical Minecraft seed finder and map viewer
Create custom themes for the Nintendo Switch
Source code repository of the FreeOrion project
Botcraft is a cross-platform C++ library to create bots
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
A fast and reliable entity component system (ECS) and much more
FlightGear Flight Simulator: free open-source multiplatform flight sim
Soft-body physics simulator
A planetarium software that shows a 3D simulation of the night sky
4X Space Strategy Game