Mobility! Accessible precision platformer

Mobility is a platformer that looks like BoxBoy, plays more like Super Meat Boy, but contains no traditional enemies and is very approachable. Instead of difficulty settings, each level may be played in a few different modes that adapt goals or gameplay elements that happen to increase or decrease difficulty. It's a clever and interesting technique, playing out over 30–60 minutes of main game (followed by as much speedrun fodder as you'd like).

I appreciate that its designer took the time to add a light story with a bit of dry wit, which further elevates this above the average independent study project.