Wow, this is really REALLY fun. It's simple and charming, and I ended up getting sucked in really fast. The map system is clever and keeps me wanting to explore all the areas and find out all their names.
I would love to see a version of this that's a bit more expanded on. Like with a slightly larger resolution, maybe a bit of acceleration on the turning, maybe a bit of a bonus reward if you manage to land a letter right on from the highest drop?