Prefabricated content, also known as prefabs, are a collection of objects used for generating zones. Currently, there are around a total of 7,000 different prefabs in Hytale. The most common prefab are trees, which have many species and variations, depending on zone and biome. Another majority being Rooms, as each Parent room can spawn with a multitude Child Rooms (or Extentions). Allowing each Room or Dungeon to feel Unique.