Cozy Island Idle: Your Relaxing Underwater Aquarium Adventure

6/3/2026, 4:22:57 AM

Tags: #casual #idler #fishing #underwater #creature-collector #cozy #farming-sim #cute #indie #collectathon #simulation #rpg

User Reviews

Score: 69%Mixed
Review Count: 52 reviews
Fetched At: 6/3/2026, 4:22:57 AM

Live Store Snapshot

Body text may reflect the state at publication time. For the latest sale, price, and review changes, prioritize the live price panel, review panel, and the Steam store listing.

Japan Price: ¥ 350
Global Price: $2.99
Sale Status: Regular pricing
Price Checked At: 6/3/2026, 4:22:56 AM

Key highlight

Cozy Island Idle is a casual fishing idle game where you catch fantasy fish to display in a customizable aquarium and on your island, offering a relaxing simulation experience with progression and collection elements.

Details

Dive into the tranquil world of Cozy Island Idle, a charming casual game that blends idle mechanics with the relaxing pastime of fishing. Developed by Overaction Game Studio and ReiVax, this simulation RPG invites players to cast their lines into vibrant waters, catching a variety of fantastical fish.

These aquatic treasures aren't just for collection; they're the key to your profit. Display your catches in a beautifully customizable aquarium, sell them to earn currency, and use your earnings to enhance both your underwater displays and your island paradise.

Overview

Cozy Island Idle offers a laid-back gaming experience centered around fishing and aquarium management. The core loop involves catching fantasy fish, showcasing them, and selling them to fund upgrades. The game emphasizes a relaxing atmosphere, beautiful graphics, and lo-fi music, making it an ideal escape for players seeking a stress-free environment. With a focus on progression and discovery, there are many secrets to uncover as you expand your aquarium and island.

Highlights

Casual Fishing & Idle Gameplay: Enjoy a relaxing fishing experience with idle mechanics that allow for progression even when you're away.
Aquarium & Island Customization: Personalize your underwater displays and your island to create your unique cozy haven.
Fantasy Creature Collection: Discover and collect a wide array of imaginative fish species to populate your aquarium.

Who It's For

This game is perfect for players who enjoy casual, relaxing experiences, simulation games, and idle progression. If you find joy in collecting, customizing, and managing a virtual space with a charming aesthetic and soothing soundtrack, Cozy Island Idle will likely be a delightful addition to your library.