Super Hostile

Super Hostile mode is a game setting that swarms the world with hostile mobs, and does many other things to increase the difficulty. It makes the difficulty of the game much higher, giving a new extra challenge for advanced players. It can be turned on and off at any time in the settings menu.

Description
Super Hostile mode makes the world full of hostile mobs, and makes the spawn rate for passive mobs amost nonexistent. Hostile mobs can gather items, and use crafting tables to make their own weapons. Mobs also have an extremely high chance of spawning with a sword or some other weapon, and the chance for them to be enchanted is also higher.

Differences in Spawning
In addition to the spawn rate for hostile mobs being increased, the amount of hostile mobs that can be around at one time is increased. Mobs will also spawn where they normally wouldn't, including:
 * Wither Skeletons have a small chance to spawn in caves.
 * Hostile mobs will spawn in a mushroom biome.
 * Cows spawn in the nether, and that's the only place they can be found.
 * Zombies have a chance to spawn in a large group all at once, sometimes with zombie villagers.
 * Magma cubes spawn in lava underground, below Y=32.
 * Pillager groups are larger, even at outposts and during raids.
 * Skeletons can carry tipped arrows.
 * Villages are extremely rare.
 * Silverfish-infested blocks now spawn in abandoned mineshafts, dungeons, woodland mansions, and caves, as well as their spawn rate in strongholds being increased.