Real Time Strategy game engine supporting early Westwood classics
Open Source MMORPG Framework
Fast and lightweight JavaScript game engine built on WebGL and glTF
CTFs as you need them
Gideros Release version
Arianne is an engine to develop multiplayer online games like Stendhal
Orx: Data-Driven Game Engine
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
A real-time game development platform
The Old PacMan! programed over the Salvat Game Fabric platform
Asphyre is a cross-platform framework for Delphi and FreePascal.
3D .NET engine for Windows, Linux, Mac
A game engine written in the D programming language
Free strategy browsergame engine.
Multi-threaded 2D Renderer licensed under the Mozilla Public License
A mobile tower 3D tower defense/defend the flag game
C++ Framework for slot machine games
A retro style video game engine for RPGs and adventure games.
Retro pong clone implemented using sfml
A game engine in java for 2D strategy games
Create your own online real-time browser-based MMO in your website