Cozy Island Idle

Idle fishing game about collecting fantasy fish for an aquarium

Overaction Game Studio, ReiVax · Published by Overaction Game Studio · Released Feb 25, 2024

Reviews: Mixed; 68% of 50
Recent reviews: Not enough recent
Players: 0; daily peak, Oct 28, 2026
Steam Deck: Playable
Last update on Steam: 2 years ago; Mar 7, 2024
Minimum PC: DirectX 9 GPU; 2 GB RAM · 1 GB disk; Full requirements

What is Cozy Island Idle?

A single-player idle fishing game set on an island. You display or sell your catches, buy upgrades that unlock new fish varieties, and customize your aquarium and island.

For you if...

+you want a background game to check between other activities

Not for you if...

−you expect idle progress without regular inventory management

What players say

68% of 50 reviews are positive

Some players praise the cute visuals and calming music. Common complaints focus on the sparse gameplay loop and limited upgrades, while recent reviews report windowing, mouse alignment, and navigation problems.

Screenshots and trailer

Cozy Island Idle system requirements

Minimum: DirectX 9 GPU, 2 GB RAM, 1 GB of disk space.

As published by the developer.

Can my PC run Cozy Island Idle?

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Minimum

OS: Windows XP/Vista/7/8/10
Processor: 1.6 GHz Dual Core or faster
Graphics: Graphics card supporting DirectX 9.0
Memory: 2 GB RAM
Storage: 1 GB available space
DirectX: Version 9.0
Notes: Even slower systems run the game.

Does Cozy Island Idle have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Cozy Island Idle run on Steam Deck?

Playable Playable: it runs on Steam Deck with some adjustments.

Sometimes shows mouse, keyboard or non-Deck controller icons
Some text entry requires manually opening the on-screen keyboard
Some in-game text is small and may be hard to read
All functionality is accessible with the default controller configuration
Default graphics settings perform well on Steam Deck
Cloud saves are not shared across platforms

PC version details

DRM: None declared on Steam
Controller: Keyboard and mouse
Platforms: Windows, macOS, Linux
Achievements: 13
Steam features: Cloud saves, Family Sharing
Languages: Full audio: English.

Does Cozy Island Idle use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 28, 2026. How to filter AI games on Steam