Open source simulation game based on Transport Tycoon Deluxe
Gideros Release version
lua dev plugin for unreal engine 4 or 5
3D game engine/framework in C, with Luajit and Python bindings now
A lightweight game server framework implemented with Actor Model
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A dead simple 2D game library for Go
An award-winning drawing program for children of all ages
FlightGear Flight Simulator: free open-source multiplatform flight sim
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RTS game with the theme of Strategy by Design
A very efficient tutor.
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Chess Database and Toolkit program
A modern, cross-platform Quake game engine based on FitzQuake.
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For exploring cellular automata like Conway's Game of Life.