The flexible game engine
An iOS & tvOS Frontend for Multiple Emulators
A cross-platform, open-source, pure C game engine for mobile game
Naev is a 2d action/rpg space game, action, rpg and simulation
3D game engine/framework in C, with Luajit and Python bindings now
Retro game engine for creating games like it's 1997
Game engine to build text adventures.
A modern, cross-platform Quake game engine based on FitzQuake.
A cross-platform port of Hexen II game.
0 A.D. is a free, open-source, cross-platform real-time strategy game.
inputbox password WIN OSX GTK QT Console VCPKG C# Lua R Fortran Pascal
Updated emulator of Forgotten Realms: Unlimited Adventures
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Orx: Portable Game Engine
SDL based generic 2D game engine
Open source FPS/RTS Game
A 16 bit style game on the 16-bit IBM XT.
a UCI chess engine
A MMOG engine of server