Edit: Issue resolved! Leaving the thread up in case anyone else has this problem.
I've noticed this with some other games, but the images are really blurry. Not as bad in this game as I've seen in the other games where this has been an issue, but still definitely detracts from enjoyability. I'm not sure if it's something that happens for everyone or not, but I suspect it has to do with compressing the images to make them fit Itch's file limits?
If it's relevant:
Method of download: Itch app
OS: Windows 7
Graphics card: Intel(R) HD Graphics Family