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Fish Idle 2: Underwater Mystery

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!

Released Nov 15, 2024 Developer Multicast Publisher MulticastGames Platforms Windows CasualAdventurePoint & ClickArcade3D
View on Steam ↗ Free (US · as of 2026-07-26)

What players say

Steam review score and the most-helpful voices, which may include critical ones. Data as of 2026-05-20.

68.5%positive1,039 reviews
Recommended · 1 found this helpful

“32 hours in... i like it. its an idler game and i play it on days i need to do stuff around the house. great little game to play in between loads of laundry/dishes or whatever chores im doing around the house”

— a player, Steam review · 54 hrs played
Recommended · 1 found this helpful

“Very strange to have this huge complex thing to finally build a submarine then not even have the submarine available yet, you should disclaimer that so people like me dont put all our focus into it only to find out you havent even made it possible to use yet. Other than that...…”

— a player, Steam review · 66 hrs played
Not recommended · 4 found this helpful

“The game itself isn't really bad but at one point it just becomes a grindy afk sim but that's still okay for a free game until.... at one point it became clear how buy equipment for real money would very much benefit your progression turning this game into a pay to win piece of…”

— a player, Steam review · 18 hrs played
Read more reviews ↗

Player activity

Monthly average concurrent players. Live count fetched 2026-07-24 01:31 UTC · history via SteamCharts.

512playing at last check
65524-hour peak
44,128all-time peak
0 25k 50k 2025 2026 27.7k avg · Nov 2025

Achievement stats

Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-07-25.

30achievements
1.8%median completion
0.5%rarest: Legendary Collector
25.8% of players 20.4% of players 16.8% of players 13.0% of players 12.5% of players 7.7% of players 6.9% of players 6.0% of players 5.7% of players 4.7% of players 3.2% of players 2.5% of players 2.4% of players 2.4% of players 2.2% of players 1.8% of players 1.7% of players 1.1% of players 1.1% of players 0.9% of players 0.8% of players 0.8% of players 0.6% of players 0.6% of players 0.6% of players 0.5% of players 0.5% of players 0.5% of players 0.5% of players 0.5% of players 25.8% 0% most earned rarest
Almost everyone has
25.8%First Catch! — Use your first set of fishing gear.
20.4%Sailor’s Start — Hidden achievement
16.8%Hidden Treasures — Hidden achievement
Rarest badges of honor
0.5%Legendary Collector — Hidden achievement
0.5%Supreme Creator — Craft 10 Tier 7 items.
0.5%Mythical Smith — Craft 10 Tier 6 items.

Price tracking

US-region pricing (USD), sampled twice daily by our own tracker since 2026-07-25. Steam prices vary by region — always confirm your local price on Steam.

Freecurrent · sampled 2026-07-26 08:39 UTC
Freelowest since tracking began2026-07-25

Latest official news

Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.

Nov 19, 2024
New patch is live!

Hello, fishermans! Glad to announce new patch with bug fixes and game improvements Window screen mode and sound settings Now you can switch the game to window mode in game settings! Be sure to stretch

Games like Fish Idle 2: Underwater Mystery

From our knowledge graph — ranked by shared traits, not a black box. Each card says why it's here.

Spilled! Spilled! 95.0% · 3,078 reviews shares Naval, Linear, Top Down, Relaxing Professional Fishing Professional Fishing 78.7% · 964 reviews shares Fishing, Free To Play, Open World, Relaxing Yonder: The Cloud Catcher Chronicles Yonder: The Cloud Catcher Chronicles 81.3% · 1,700 reviews shares Fishing, Open World, Relaxing, Cute Outpath Outpath 93.8% · 1,662 reviews shares Idler, Resource Management, Open World, Relaxing Zup! 2 Zup! 2 93.0% · 1,353 reviews shares Free To Play, Point Click, Open World, Relaxing Voices from the Sea Voices from the Sea 93.6% · 902 reviews shares Free To Play, Point Click, Linear, Cute Find 100 Ducks and Blast Them! Find 100 Ducks and Blast Them! 97.4% · 588 reviews shares Free To Play, Open World, Relaxing, Cute Sizeable Sizeable 97.2% · 1,110 reviews shares Linear, Top Down, Relaxing, Cute

Screenshots

Official Steam store screenshots — click any shot to enlarge.

Facts & details

From the Steam store record, snapshot 2026-05-20.

GenresAdventure, Casual, Indie, Free To Play
Player tagsCasual · Adventure · Point & Click · Arcade · 3D · Top-Down · Cute · Atmospheric · Relaxing · Fishing · Naval · Linear (SteamSpy community voting)
FeaturesSingle-player
LanguagesEnglish, Spanish - Spain, German, Korean, Russian, Japanese
Achievements30
Estimated owners100,000 – 200,000 (SteamSpy)
Minimum system requirements (PC)

Minimum: OS: windows 10 Processor: Core I3 Graphics: no Sound Card: - VR Support: no