No Caves! is a fairly small mod which lets you control most vanilla terrain features and entities.
It doesn't let you fine-tune values, but simply say if certain features should exist or not.
Currently those features are:
Terrain and Structures
- Caves
- Ravines
- End Cities (Only 1.12.2)
- Mineshafts
- Nether Bridges (Nether Fortress)
- Nether Caves
- Ocean Monuments
- Villages
- Woodland Mansions (Only 1.12.2)
- Strongholds
- Scattered Features
- Witch Huts
- Igloos
- Desert Pyramids
- Jungle Temples
Terrain Features
- Lava
- Lakes
- Dungeons
- Fires
- Glowstone
- Ice
- Nether Lava
- Nether Lava 2
- Nether Magma
World Decoration (Version 1.2 and up)
- Big Mushrooms
- Cacti
- Clay
- Dead Bush
- Desert Wells
- Flowers
- Fossils
- Grass
- Ice
- Lava Lakes
- Water Lakes
- Lilypads
- Pumpkins
- Reeds/Sugarcanes
- Rocks
- Sand
- Sand Pass 2
- Mushrooms
- Trees
Entities (Version 1.2 and up)
- Skeletons
- Zombies
- Spiders
- Blazes
- Creepers
- Endermen
- Slime
- Cave Spiders
- Endermites
- Ghasts
- Giant Zombies
- Guardians
- Iron Golems
- Magma Cubes
- Pigmen
- Polar Bears
- Shulkers
- Silverfish
- Snowmen
- Witches
- Parrots (Only 1.12.2)
- Wither Skeletons (Only 1.12.2 and 1.11.2)
- Strays (Only 1.12.2 and 1.11.2)
- Husks (Only 1.12.2 and 1.11.2)
- Withers (Prevents them from spawning, not being created, resources will be lost)
- Dragon (Prevents them from spawning, not being created, resources will be lost)
- Villagers
- Zombie Villagers (Only 1.12.2 and 1.11.2)
- Horses
- Donkeys (Only 1.12.2 and 1.11.2)
- Mules (Only 1.12.2 and 1.11.2)
- Wolves
- Llamas (Only 1.12.2 and 1.11.2)
- Evoker Fangs (Only 1.12.2 and 1.11.2)
- Bats
- Evokers (Only 1.12.2 and 1.11.2)
- Vindicators (Only 1.12.2 and 1.11.2)
- Illusion Illagers (Only 1.12.2)
- Ocelots
- Ender Crystals
- Eggs
- Rabbits
- Pigs
- Sheeps
- Cows
- Chickens
- Squids
- Skeleton Horses (Only 1.12.2 and 1.11.2)
- Zombie Horses (Only 1.12.2 and 1.11.2)
- Shulker Bullets
- Dragon Fireballs
- Elder Guardians (Only 1.12.2 and 1.11.2)
- Fireballs
- Small Fireballs
- Large Fireballs
- Snowballs
- Arrows
- Experience Orbs
- Ender Eyes
- Ender Pearls
- Spectral Arrows
- Mooshrooms
- Potions
- Experience Bottles
- Item Frames
- Primed TNT
- Tipped Arrows
Planned Features
Ore spawn control in some form or anotherCompleted. Will be released once other features are done.- Replace blocks in world, like Stone, Dirt or Grass with another block. About half done at the time of writing this

