lua dev plugin for unreal engine 4 or 5
RTS game with the theme of Strategy by Design
Chess Database and PGN viewer
A modern, cross-platform Quake game engine based on FitzQuake.
3D Engine c++
A cross-platform port of Hexen II game.
GemRB is a portable open-source implementation of the Infinity Engine
A MUD client for Android, iOS, Linux, Mac OS X and Windows
INSTEAD - Simple Text Adventure Interpreter.
A 2D scrolling platform shooter, inspired by Duke Nukem 1
Android, UIQ 3.0, Series 60 Edition 5 open-source software
Cross-platform real-time strategy game (3D)
A free 3d game for PC that does not limit the player. Fight,Build,Gain
General Purpose Engine for Graphic Adventures.
NES/Famicom emulator based on FCE Ultra.
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
3D space trading and combat game
A cross platform Lua based game engine
Free MMORPG
Frontend for arcade and console emulators like mame and nestopia.