Build a house in 40 seconds! One Command House : Minecraft 1.12 - YouTube
Summon Mob Generator (Java Edition 1.12)
How to Make ANIMATED GENERATORS in 1.16 | Spinning Emerald Hypixel [Vanilla Minecraft JAVA Command] - YouTube
Mekanism Generators for Minecraft 1.12.2
Download mod NuclearCraft for Minecraft [1.12.2] [1.11.2] [1.10.2] [1.7.10]
Download mod Mekanism Generators for Minecraft [1.16.5] [1.16.4] [1.16.1] [ 1.12.2] [1.7.10]
Turns out that the noise generator used in the Beta+ mod for 1.12.2 is on the nose for actual beta world generation. As seen here: the panorama seed. : r/GoldenAgeMinecraft