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.

Horror that challenges the brain and messes with the psyche, leading to a mind-racking experience. 

Games where the primary goal is keeping the player character alive under harsh circumstances such as dwindling resources or a hostile environment.