Gideros Release version
Arianne is an engine to develop multiplayer online games like Stendhal
Game engine supporting many 3D/2D formats and graphic effects
JavaScript framework to build game engines, games, emulators and apps
Old-school 2D game engine
The imaginary eight-bit machine
Asphyre is a cross-platform framework for Delphi and FreePascal.
SDL 2 headers for Free Pascal Compiler
Free strategy browsergame engine.
Modular Gaming Open Source Persistent Browser Based Game Framework
A 3D, fully concurrent game engine
Pear3DEngine is a modern and modular 3D development framework
An extensible development framework for roleplay games.