Galaxium
For the mod to work, installation of GeckoLib and JEI is required - make sure these dependencies are present in your modpack.
The Galaxium mod significantly expands game content by adding 16 unique bosses, each of which rewards the player with an epic item upon defeat. Among the opponents you'll encounter various creatures: from the Eye of Chaos and Tree Monster to Stormer and Infected Cube.
You'll face battles with elemental entities of earth, water, fire, and air, as well as dangerous adversaries like Fighter Amalgam, Eye of Hell, Flesher, Souley, Demon King, Chorius, Ender Worm, and Ender King.
Particular attention deserves the mighty boss THE DARKNUX - the culminating opponent that completes the challenge lineup.
In addition to bosses, the mod introduces new regular enemies: Darker, Shadow Man, and Ecarlite. Various building blocks are also added: dark stone, dark wood, dark dirt, dark grass, and dark foliage.
The final challenge will be the encounter with the supreme boss GALAXIUS.
For more detailed gameplay familiarization, we recommend watching videos on the developer's YouTube channel.