A game framework written with osu! in mind.
Arianne is an engine to develop multiplayer online games like Stendhal
Game engine supporting many 3D/2D formats and graphic effects
Orx: Portable Game Engine
INSTEAD - Simple Text Adventure Interpreter.
Molecular viewer and prototyping framework
Vivid3D is an open-source 3D engine with powerful 2D UI.
Java Settlers
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
Cinema Enters Game Console
Sdk library for creating 2048 game in c#.
2D Game Engine
The imaginary eight-bit machine
Modern 3D engine and IDE written using C# and C++.
A cross platform Lua based game engine
8-bit Graphical API for Java
Portable game engine with main focus on point-and-click adventures
Build Cross-platform Applications
Vivid Engine 2 is an open source 3D Engine coded using C# and C++.
An environment to develop games based on a rectangular board
Asphyre is a cross-platform framework for Delphi and FreePascal.