In "異世界の魔王様," you play as a once supreme Demon Lord who was betrayed by a shameless hero and turned into an egg! Now, it's time to gather your monster army, reclaim the prosperity of your Demon Lord castle, and embark on a journey to counterattack the human world. Uncover the truth behind hero invasions alongside Demon Lords from around the globe.

Collect stray monsters, hatch their eggs, and obtain randomly attributed creatures, including rare Shining monsters. Evolve and counterattack to enhance your power, surpassing your former self. Strategize by combining different monsters in battles to create formidable lineups. Enjoy idle profits and battles with ease, including a generous gift of 4096 gacha spins. Rebuild your Demon Lord castle from scratch and compete with Demon Lords worldwide for the ultimate throne.