Arianne is an engine to develop multiplayer online games like Stendhal
General Purpose Engine for Graphic Adventures.
Opengate is a Jumpgate remake
The first-ever RPG for WordPress
A suite of tools for any RPG system
Alpha One is based on Vallheru
plugin-based RPG manager in C++ and Qt5
A 2D Adventure Game & Engine
Star Trek Web browser game
Old School gaming tool for GMs of AD&D/OSRIC.
A videogame about the wonders of operating system concepts.