PCGame

Fish Idle 2: Underwater Mystery

Casual idle fishing game about automating catches and upgrading boats

Multicast · Published by MulticastGames · Released Nov 15, 2024

AdventureCasualIndieFree To Play

Reviews
Mixed
68% of 1,777
Recent reviews
Mixed
50% of 22 in 30 days
Players
460
daily peak, Nov 7, 2026
Steam Deck
Playable
Last update on Steam
1 year ago
Sep 15, 2025
Minimum PC
no
Full requirements

What is Fish Idle 2: Underwater Mystery?

A single-player, top-down 3D idle fishing game where you steer a boat toward fish schools and avoid obstacles. Catches happen automatically at close range, and resources fund upgrades to your boat, rods, storage, farms, and hired ships.

For you if...

  • +you enjoy managing boat upgrades and automated fishing systems
  • +you prefer a cute, top-down fishing setting
  • +you like quests alongside incremental progression

Not for you if...

  • −you want hands-on casting rather than automatic catches
  • −you want multiplayer fishing
  • −you prefer fast action over incremental resource management

What players say

68% of 1,777 reviews are positive · 50% of 22 in the last 30 days

Players praise the simple, relaxing start and its suitability as a background game. Common complaints include severe late-game grinding, paid equipment that accelerates progress, no offline or cloud saving, and unfinished late-game systems; recent long-time players describe development as abandoned.

Players over time

▼ -13% vs a month ago

Players online on Steam, one sample a day.

Highest since Sep 2026: 818 players on Oct 31, 2026.

Show the data
DayPlayers
Nov 7, 2026460
Nov 6, 2026428
Nov 5, 2026630
Nov 4, 2026382
Nov 3, 2026434
Nov 2, 2026459
Nov 1, 2026793
Oct 31, 2026818
Oct 30, 2026753
Oct 29, 2026720
Oct 28, 2026405
Oct 26, 2026632
Oct 25, 2026622
Oct 24, 2026640
Oct 23, 2026662
Oct 22, 2026652
Oct 21, 2026664
Oct 20, 2026698
Oct 18, 2026672
Oct 17, 2026607
Oct 16, 2026638
Oct 15, 2026565
Oct 14, 2026605
Oct 13, 2026635
Oct 11, 2026680
Oct 10, 2026705
Oct 9, 2026326
Oct 8, 2026340
Oct 7, 2026651
Oct 6, 2026634
Oct 4, 2026331
Oct 3, 2026673
Oct 2, 2026634
Oct 1, 2026632
Sep 30, 2026580
Sep 29, 2026572
Sep 27, 2026689
Sep 26, 2026655
Sep 25, 2026721
Sep 24, 2026668
Sep 23, 2026769
Sep 23, 2026672
Sep 22, 2026641
Sep 21, 2026771

Screenshots and trailer

Fish Idle 2: Underwater Mystery screenshot 1

Fish Idle 2: Underwater Mystery system requirements

Minimum: no.

As published by the developer.

Can my PC run Fish Idle 2: Underwater Mystery?

The published requirements do not name a graphics card we can compare.

Set up my PC →

Minimum

OS
windows 10
Processor
Core I3
Graphics
no

Recommended

OS
windows 10
Processor
Core I3
Graphics
no

Does Fish Idle 2: Underwater Mystery have co-op or multiplayer?

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

Does Fish Idle 2: Underwater Mystery run on Steam Deck?

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

  • Some in-game text is small and may be hard to read
  • Display output not correctly scaled
  • All functionality is accessible with the default controller configuration
  • Shows Steam Deck controller icons
  • Default graphics settings perform well on Steam Deck

PC version details

DRM
None declared on Steam
Controller
Keyboard and mouse
Platforms
Windows
Achievements
30
Steam features
Family Sharing
Languages
Text only: English, Spanish - Spain, German, Korean, Russian, Japanese.

Does Fish Idle 2: Underwater Mystery 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 Nov 6, 2026. How to filter AI games on Steam

Tags

Recent updates

1 DLC available.

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