You picked an interesting one, Shovel Knight, because its graphics engine actually emulates how the NES graphics chip works (with a few enhancements). That give

You picked an interesting one, Shovel Knight, because its graphics engine actually emulates how the NES graphics chip works (with a few enhancements). That gives it a look that stands out from a lot of others. Super Meat Boy is an example of the visual sameness in my opinion. It looks exactly like Broforce or Super Time Force Ultra or a million others. The aesthetic seems to be 256 color VGA with really tiny sprites. It doesn't really remind me of anything or look inspired by anything in particular IMO.