Cross-Platform C++ 2D/3D game engine
Orx: Portable Game Engine
A free 3D game engine to create games and realtimes scenes for Windows
An isometric arcade-style game of skill, puzzles and exploration
Delphi : VRCalc++ OOSL & + (Paged List, TextEditor, VRAstroVision ...)
2D Platform remake based on the game from the 1980s
Android apps.
Atic Atac Spectrum Game Remake
New Sabreman's adventure. New remake of a 80's game by igcefo
The library needed to make all those games true
Vivid is a modern C++ 3D engine using OpenGL4+
2D Game Engine
A 2D game engine and level editor
A cross-platform 2D game engine
A cross platform Lua based game engine
Cross-platform 2D and 3D game engine
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
Free and Open Game Programming Language for Windows and GNU/Linux
Real-time RPG for PC/tablet/phone; multiple quests and random dungeons
Free/Open Source 2D Arcade Golf Game
scriptable game engine with built-in support for 2D graphics and sound
2D ARPG Engine