Stride (formerly Xenko), a free and open-source cross-platform C# game
A pure Go game engine
Simple GTK# Paint Program
Gideros Release version
LDraw™ editor for LEGO® style digital building instructions.
A book reader for Nintendo DS
xBRZ: "Scale by rules" - high quality image upscaling filter by Zenju
Generates XCI/NSP/HFS0/ExeFS/RomFS/Certificate dumps from Switch
3D C++ Game Engine - yet another open source game engine
A mapping tool for text-based games like text adventures, MUDs, etc.
Jigsaw And Slider Puzzle Game
Advanced rhythm game for Windows, Linux and OS X
3D .NET engine for Windows, Linux, Mac
Map render tool for 2d RTS games
evolution for vegastrike SpaceSim/Combat/Trade game
An expanded XNA game creation framework
3D Game engine
TurboSphere is an easy to learn and powerful JS based game engine.
Invading aliens type game using SDL
realistic truck simulator with 3D graphics done from zero
realistic truck & car simulator, with OpenGL graphics