Free game engine for development of desktop, mobile, and web games
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
Stride (formerly Xenko), a free and open-source cross-platform C# game
The source code to VVVVVV
Command & Conquer: Remastered Collection
Open game and rendering engine packed into a JavaScript framework
Ct.js is a desktop game engine that makes learning programming fun
3D Game engine with editor
A sharp, readable, vector-y version of Monocraft
Action-adventure game originally released in 2013
The flexible game engine
Games for tomorrow's programmers
Gideros Release version
The Tiny JavaScript Game Engine That Can!
World Class Leader Board Editor.
Descent 3 by Outrage Entertainment
Vivid3D is a C++ IDE/3D engine, with python scripting.
W3LuaEnv is a free tool for Warcraft III modders
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Retro style, multi-platform soccer game
Europa Universalis 4 save game editor
OgreWin3D
A free 3d game for PC that does not limit the player. Fight,Build,Gain
ENDEDIT is a B800 text screen editor