Xash3D FWGS engine
Open source clone of the Age of Empires II engine
A pure Go game engine
Python MUD/MUX/MUSH/MU* development system
Tools and Z80 engine for creating adventure games. (RUST)
A tool to easily transform Unreal Engine games into VR experiences
Full featured MUD server with all the trimmings.
Portable version of the incredible Godot Game Engine
RPG dice roll simulator for vintage Tandy TRS-80 100/102/200 laptops
A space race game in the style of A Dark Room
An online multiplayer turn based strategy game and board game engine.
Open Source 3D Game Engine
Small OpenGL based game enegine