Forge Mods for Minecraft 1.21
Browse 11 free Forge mods for Minecraft 1.21 — popular picks include Stellarity, Tense Ambience, RPGTitles.
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Stellarity
Extreme rehaul of The End in a unique fantasy style, combined with biome and structure overhauls, new items, weapons and plenty of other content to discover.
Tense Ambience
This mod enhances the atmosphere of all default dimensions with biome-specific, tense ambient sounds (Perfect for Horror Modpacks).
RPGTitles
Small, cosmetic datapack that adds titles to small things in the game! See the dimension name when you switch dimension, see the current biome you are in and maybe get something when you kill a powerful foe..
XxCreeperxX's Zombie Expansion
A mod that adds various types of zombies, blocks, items, dimensions, mechanics and more
FactoryM
FactoryM is a modpack that improves the Minecraft experience in exploration (with biome mods), mechanisms (with the create mod) and also adds visual improvements such as shader compatibility
SurvivalReborn
Survival Reborn enhances Minecraft survival with dynamic terrain, new biomes, and unique mobs, offering fresh challenges and gameplay mechanics. Explore, craft, and survive in a world full of adventure, ancient secrets, and powerful items!
Geologica
Overworld biomes with natural rocks and sinkholes without adding bloat.

Slimes Everywhere
Allows Slimes to spawn at night in any biome
Luminous Nether Mod (1.21.1, 1.20.4) – A Nether Alive with Danger
Luminous Nether Mod expands the Nether with two new biomes, lots of new mobs, and a variety of building blocks and decorations. This mod adds new gameplay mechanics, loot to find, and dangerous areas to explore. It makes the Nether a more lively and challenging place. Features: Adds two new biomes to the Nether: the […]
Galosphere Mod (1.21.1, 1.20.1) – The Diverse World of The Underground
Galosphere Mod is a mod designed to enhance and expand diversity in Minecraft's underground world. This mod focuses on generating new biomes, creatures, mechanics, blocks, items, effects, achievements, and more. The new underground terrain generation introduced by this mod adds crystals and new mineral resources to the game. These new minerals and materials will allow […]
KingCraft [FORGE]
Travel to a different planet? Fight new bosses? Discover new game mechanics? Welcome here.