Different types of slimes can be combined and enlarged by feeding a slime a plort from another species, making them noticeably larger and able to produce two plorts (known as "Largo" in game).[8][9][10] However, if a slime combines more than three traits by eating a third plort different from either species of slime it's combined with, it becomes an aggressive malevolent black slime called the "Tarr", which devours all other slimes around it as well as being able to damage the player. The player can pump fresh water from ponds and springs to splash and disintegrate the Tarrs.