Desktop/Android/HTML5/iOS Java game development framework
lua dev plugin for unreal engine 4 or 5
OgreWin3D
Orx: Portable Game Engine
Updated emulator of Forgotten Realms: Unlimited Adventures
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
A 2D game engine and level editor
2D ARPG Engine
Open Game Bootstrap
evolution for vegastrike SpaceSim/Combat/Trade game
Cross-platform C framework very compact libraries and tools.
A generic 2D engine for any kind of game
3D Game engine
C++ Framework for slot machine games
cross-platform 2d game engine
Investigo - DX9 Performance and Debugging Toolkit
A cross-platform OpenGL based lightweight scenegraph library
Cross-platform 2D game engine
A cross platform 3d c++ game engine
This game is a 2d arcade game. You can move, jump, kill monster.
also download updates from files section
Read and write PGN format and test moves for legality.