itch.io

An easy 3D desktop Game Engine scriptable in Python.

Simple normal map generator for 2D sprites!

Create and download printable grids for drawing, plotting, and tabletop games

A quick and easy to use drag and drop retro game creator for your favourite handheld video game system

simple web-based free and open-source visual novel editor, it can be used in web browser.

From Game Maker's Toolkit