This can also lead to reduced count of pyramids or living trees.Īt the other hand there are stable seeds which always look equal no matter how often you generate it. Sometime also the location of an evil biome is different. Also the dungeon can have different variations with the same seed but you can generate the exact same variation again after some trials. In most cases minecart tracks, giant trees, hives, enchanted sword shrines are at different location. They can generate slightly different worlds each time you generate the world. There are some seed for vanilla which are unstable. But for most mods the vanilla seed and the modded seed look very similar at most parts. There might be some exception for mini biomes. But the mods I checked so far all create there content after the end of vanilla world gen. If you like you can create a mod which generates a total different world. Click to expand.Depends at the content of the mod.