Reskins enemies into adorable creatures (cosmetic only, no gameplay changes). Nauvis: biters and spitters become cute slimes and their nests become bushes; worms become slimes too. Gleba: pentapods become glowing critters and egg rafts become glowing green orbs. Vulcanus: demolishers get a dragon head with a stone-bead body.
Small changes concerning balance, gameplay, or graphics.