Fish Idle 2: Underwater Mystery
Dive into the most fun idle fishing arcade game! Manage your Fish Kingdoms with automated fishing, upgrade your boat and gear, invest in passive income, and outsmart the market. Become the ultimate fish tycoon!
- Release Date:11/15/2024
- Developer:Multicast
- Publisher:MulticastGames
- Last Updated:9/17/2025
- Steam App Id:3037410
Fish Idle 2: Underwater Mystery
- Windows
- Mac
- Linux
- Steam Deck (Playable)
Steam Charts, Stats, and Live Player Count
At the moment, Fish Idle 2: Underwater Mystery has 17,556 concurrent players online and in-game. This is 9% lower than its previous all-time peak of 19,316 players achieved on 9/18/2025.
Review History Chart
Track historical review trends and overall ratings for Fish Idle 2: Underwater Mystery. It has received a total of 1,236 reviews on the Steam store and achieved a Player Score of 64 (Mixed).
Community Hub Members & Followers Chart
Explore the cumulative breakdown of Steam community hub members for Fish Idle 2: Underwater Mystery and its growth over time. It currently has 1,043 followers on its community page.
About Fish Idle 2: Underwater Mystery
Fish Idle 2: Underwater Mystery is an Indie, Casual, Adventure, and Free to Play game developed by Multicast. On 11/15/2024, it was released on the Steam Store by MulticastGames.
Players have rated Fish Idle 2: Underwater Mystery as "Mixed" out of 1,236 total reviews on the Steam Store. These are split between 817 positive reviews and 419 negative reviews — an overall 66% positive review rating.
It can be played and ran on Windows systems. At the moment, it is possible to play Fish Idle 2: Underwater Mystery on the Steam Deck but some functionaliy may not be fully supported.
It also supports 6 languanges in-game including English, Spanish (Spain), German, Korean, and Russian. Each language comes with varying levels of support for the in-game interface, audio, and fully translated subtitles.
According to Steam’s category system, Fish Idle 2: Underwater Mystery supports the following features:
- Single-player
- Family Sharing
From the Steam community, Fish Idle 2: Underwater Mystery has been tagged with the following user tags:
- Idler
- Atmospheric
- Free to Play
- 3D
- Naval
- Linear
- Fishing
- Trading
- Cute
- Arcade
- Resource Management
- Open World
- Top-Down
- Point & Click
- Indie
- Casual
- Relaxing
- Adventure
- Singleplayer
- Score Attack
Media & Sceenshots
Watch the featured video for Fish Idle 2: Underwater Mystery and see the latest screenshots from the Steam Store.
DLC & Related Apps
Fish Idle 2: Underwater Mystery is referenced by 1 other related app in the Steam Store.
| Image | Name | Type | Release Date | Actions |
|---|---|---|---|---|
 | Fish Idle 2: Underwater Mystery - Welcome Pack | DLC | 3/1/2025 | View |
Related Packages
Fish Idle 2: Underwater Mystery is referenced by 1 package in the Steam Store.
| Name | Price | Actions |
|---|---|---|
| Fish Idle 2: Underwater Mystery | $3.74 | View |
Supported Languages
Fish Idle 2: Underwater Mystery is available in 6 different languages with varying levels of support for the in-game interface, audio, and fully translated subtitles.
| Name | Interface | Audio | Subtitles |
|---|---|---|---|
| English | Yes | No | No |
| Spanish (Spain) | Yes | No | No |
| German | Yes | No | No |
| Korean | Yes | No | No |
| Russian | Yes | No | No |
| Japanese | Yes | No | No |
Frequently Asked Questions
Soures & References
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Fish Idle 2: Underwater Mystery data has been sourced from:
- Valve Corporation. (2025, September 17). Fish Idle 2: Underwater Mystery on Steam. Steam Store. https://store.steampowered.com/app/3037410
- Valve Corporation. (2025, September 17). Fish Idle 2: Underwater Mystery. Steam Community Hub. https://steamcommunity.com/app/3037410