Idle Reef

Build a coral reef

Idle Reef is a PC ecosystem-building game set on the ocean floor. You start with a small piece of coral and grow it into a reef by attracting marine life and expanding the habitat.

Grow and manage the ecosystem

Manage resources to unlock species, and customize the reef with coral, algae, and fish to unlock and upgrade. You can play actively to speed up growth, or leave the reef to develop on its own.