Ct.js is a desktop game engine that makes learning programming fun
Free game engine for development of desktop, mobile, and web games
3D Game engine with editor
A sharp, readable, vector-y version of Monocraft
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs
Action-adventure game originally released in 2013
Stride (formerly Xenko), a free and open-source cross-platform C# game
The flexible game engine
Games for tomorrow's programmers
The Tiny JavaScript Game Engine That Can!
Descent 3 by Outrage Entertainment
World Class Leader Board Editor.
C64/Amiga emulator with shader and runAhead
Delphi Java - VRCalc++ OOSL (Script) and + (Binary Exec Distro)
Retro style, multi-platform soccer game
Europa Universalis 4 save game editor
A free 3d game for PC that does not limit the player. Fight,Build,Gain
A cross-platform, open-source, pure C game engine for mobile game
Lite CPS Tester
An elegant Go board and SGF editor for a more civilized age
3D C++ Game Engine - yet another open source game engine
99.95% station. 0.05% bees
Modern 3D engine and IDE written using C# and C++.
Solve Go problems (based on GoGrinder GoGrinder.sf.net )