- Skeletons revive on a full moon
- They can be possessed by nightmare creatures or Gestalts.
- When defeated by weapons they do not "disappear" they just turn back into a pile of bones, to completely kill them you need to hammer them.
- Koalefant, Deers, Volt Goat, Pigmen, Bunnyman, and also bosses leave bones when they die. (except those that obviously do not have bones).
- To avoid affecting automatic farms too much, only those that a player has killed could turn into a pile of skeletons (if possible). Or an item that inhibits the creation of skeletons in an area. (maybe a skeleton totem).