The Ren'Py Visual Novel Engine
A free/open source client and automation tool for Ragnarok Online
Python MUD/MUX/MUSH/MU* development system
Kitty-Tools is a Kahoot Cheating Client for all devices and interfaces
Open source clone of the Age of Empires II engine
Vivid3D is a C++ IDE/3D engine, with python scripting.
GameServer is a sophisticated, game server designed for online games
PyCAPGE - Python Classic Adventure Point and Click Game Engine
A scriptable 2d randomizable maze game
open game world to be set in a realistic environment
Scriptable GTK based Python MUD Client
Make games with Lego-like building blocks