Well, I was wondering, I've seen some 8x8, 16x16 and 32x32 tiles... but I think I'm not lying when saying that I've not seen a single 4x4 tileset (or I may have missed it somewhere xD) anyways, I was looking at some concept tilesets in Surt's CC0 scraps and thought, "hmm... I wonder if I could turn those into 4x4 tiles" and here they are, I must admit I just did two... for now, but if I feel inspired I think I'll draw the others if I feel inspired xD