Underground Worlds Mod (26.2, 1.20.1) – A New World Beneath the Surface

Underground Worlds Mod features each biome with its own terrain, mobs, structures, and loot. Those added structures like spider nests, frozen dungeons, underground jungles, and more.

Features:

• Underground Jungle
  • Generates under jungles or other warm biomes.
  • Filled with jungle grass, mud, and hostile jungle-themed mobs.
  • Contains Jungle Temples with traps, chests, and unbreakable temple tools.
  • Temple tools can be upgraded into special weapons like the Blade of the Jungle (inflicts poison) and Axe of Regrowth (plants saplings).
  • Jungle Zombies and Jungle Bees spawn here and can poison on hit.
  • Chests may contain the Antidote Flask, which gives poison immunity.
• Spider Caves
  • Found under cold and dry biomes.
  • Packed with cobwebs, spider eggs, and abandoned structures.
  • Home to spiders, cave spiders, and the venomous Black Recluse.
  • Black Recluse drops Spider Fangs, used to craft Spider Armor.
  • Full Spider Armor set gives a chance to poison attackers.
• Underground Tundra
  • Appears in cold areas and covered with snow and icicles.
  • Hosts Frozen Zombies, Icy Creepers, and Strays.
  • Mobs can freeze players on contact or explosion.
  • Contains Ice Dungeons with frozen cores used to craft Freezing Tools.
  • Freezing Tools can freeze mobs when hitting them.
• Underground Desert
  • Full of sand, quicksand, and fossils (including diamond ore).
  • Ashans shoot blindness arrows; husks and The Wrapped also appear.
  • The Wrapped causes blindness on contact.
  • Features the Pyramid, where the Desert Charm can be found.
  • The Desert Charm grants immunity to blindness.
• Minor Structures
  • Chillager Outpost
  • Jungle Treehouse
  • Swamp House

Screenshots:

Underground Worlds Mod Download Links