https://midboss.itch.io/rom - Pretty humorous point and click game.
https://mattmakesgames.itch.io/celeste - Hard but fair representation of fighting against depression and anxiety.
https://river-crow-studio.itch.io/learn-japanese-to-survive-hiragana-battle - Good for learning one of the Japanese alphabets.
https://river-crow-studio.itch.io/kanji-combat - Same as the above.
https://dj_link.itch.io/quest-of-dungeons - Fun top down dungeon crawler.
https://chrisnzl.itch.io/tallowmere - Fast-paced roguelike platformer dungeon crawler.