itch.io

Focused on imparting a skill, lesson, or piece of information to its player that would be helpful to them in other aspects of life, such as a faster typing ability or knowledge about a period in history.

Things that are available on GitHub

Games or tools that are MIDI enabled

Contains (or is themed around interacting with) a musical score, soundtrack, or backing track(s).

Games that can be played alone

Instructions on how to do something