You have a underwater egg factory and all you need to do is collect as many eggs as possible.

Starting with a small underwater dinosaur factory, the sea dinosaur eggs are packaged and sold. Use the money to level up and evolve your sharks and sea dinosaurs. The higher the dino level, the faster the laying speed and the more the egg price. Open up a new production line and fill your shell boxes with your rare ocean species eggs.

Welcome to Idle Sea Monsters, the ultimate idle underwater dinosaurs egg factory tycoon game! Unlock rare sharks and sea dinosaurs, build your egg farm, and become a legendary idle factory tycoon. Manage and expand your empire in this addictive idle game. Collect, evolve, and battle with rare sharks and underwater dinosaurs like Mosasaurus, Megalodon, Kronosaurus, Great white shark, Tiger shark, Hammerhead and more.
Embark on an epic adventure to:
Unlock a vast variety of rare sharks and prehistoric underwater dinosaurs
Build and expand your idle egg farm
Hatch and evolve dino eggs into powerful creatures
⚔️ Engage in thrilling battles to prove your strength
Discover rare breeds with unique abilities
Explore underwater realms and conquer new territories
Play 15+ minigames to test your skills
Compete with other tycoons to become the ultimate sea master!

Immerse yourself in the enchanting world of sharks and sea dinosaurs. Experience the excitement of being a legendary idle farm tycoon. Download now and embark on a journey of a lifetime!