I never had an C64, as they weren't popular here in Brazil, so maybe this is a stupid question for your C64 users, but I have no idea, so..
I've seen some different kinds of sprites in C64 games, and I would like to know what's the difference about those kinds of sprites.
As example, I'll use a game that seems to be a favourite among C64 players.. Mayhem In Monsterland
Take a look at the screenshot. The main hero sprite (Inside the red circle) is very clear and detailed, he almost seems out of place in the game, and the enemies sprites (Inside the yellow circles) look more pixelled and ugly.
What's the difference between both sprites?