STEAMDB NEXUS

Steam app 3037410 · updated 13 Sep 2026, 07:21 UTC

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!

Fish Idle 2: Underwater Mystery Steam header artwork
MulticastMulticastGames
793playing now
85024-hour peak
44,128all-time peak
810average, last 30 days

The last 30 days

+21.4Gain+2.71%% gain1,063Peak

720 hourly samples, with the daily peak drawn over them. Weekends are shaded.

02875748611k14 Aug19 Aug24 Aug29 Aug03 Sep08 Sep13 SepFriday 14 August 2026920 peakSaturday 15 August 2026918 peakSunday 16 August 20261,057 peakMonday 17 August 20261,021 peakTuesday 18 August 20261,039 peakWednesday 19 August 2026982 peakThursday 20 August 2026933 peakFriday 21 August 2026997 peakSaturday 22 August 20261,029 peakSunday 23 August 20261,063 peakMonday 24 August 20261,003 peakTuesday 25 August 2026952 peakWednesday 26 August 2026972 peakThursday 27 August 2026963 peakFriday 28 August 2026873 peakSaturday 29 August 2026796 peakSunday 30 August 2026865 peakMonday 31 August 2026803 peakTuesday 01 September 2026819 peakWednesday 02 September 2026797 peakThursday 03 September 2026773 peakFriday 04 September 2026842 peakSaturday 05 September 2026821 peakSunday 06 September 2026836 peakMonday 07 September 2026789 peakTuesday 08 September 2026799 peakWednesday 09 September 2026770 peakThursday 10 September 2026799 peakFriday 11 September 2026838 peakSaturday 12 September 2026850 peakSunday 13 September 2026793 peak
Daily peakEvery hourly sample

All time

23 months, November 2024 to September 2026. The highest number of people in the game at once, each month, on a time axis -- a gap in the record stays a gap.

012k24k36k48kNov 2024Feb 2025May 2025Aug 2025Nov 2025Feb 2026May 2026Aug 2026November 20241,247 monthly peakDecember 20241,010 monthly peakJanuary 2025910 monthly peakFebruary 20251,520 monthly peakMarch 20253,099 monthly peakApril 20253,911 monthly peakMay 20253,338 monthly peakJune 20254,549 monthly peakJuly 20257,125 monthly peakAugust 20257,036 monthly peakSeptember 202519,305 monthly peakOctober 202519,843 monthly peakNovember 202544,128 monthly peakDecember 202523,445 monthly peakJanuary 202611,449 monthly peakFebruary 202610,215 monthly peakMarch 20269,576 monthly peakApril 20269,035 monthly peakMay 20265,427 monthly peakJune 20264,758 monthly peakJuly 20264,432 monthly peakAugust 20261,063 monthly peakSeptember 2026850 monthly peak
Monthly peak

The last four months

Show:

The highest number of people in the game at once, each month. Four, because four is as far back as the source keeps anything finer than one figure a month.

01k2k4k5kJuly 2026August 2026September 2026October 2026July 20264,432 peak — daily detail belowAugust 20261,063 peak — hourly detail belowSeptember 2026850 peak — hourly detail below
Monthly peakHas finer data

July 2026

31 days, each one the highest figure that day. The source keeps no hourly detail this far back. Weekends are shaded.

01k2k4k5k01 Jul06 Jul11 Jul16 Jul21 Jul26 Jul31 JulWednesday 01 July 2026683 peakThursday 02 July 2026664 peakFriday 03 July 2026655 peakSaturday 04 July 2026717 peakSunday 05 July 20263,296 peakMonday 06 July 2026877 peakTuesday 07 July 20264,186 peakWednesday 08 July 20264,432 peakThursday 09 July 2026725 peakFriday 10 July 2026681 peakSaturday 11 July 2026737 peakSunday 12 July 2026669 peakMonday 13 July 2026710 peakTuesday 14 July 2026690 peakWednesday 15 July 2026705 peakThursday 16 July 2026640 peakFriday 17 July 2026618 peakSaturday 18 July 2026672 peakSunday 19 July 2026673 peakMonday 20 July 2026673 peakTuesday 21 July 2026697 peakWednesday 22 July 2026616 peakThursday 23 July 2026655 peakFriday 24 July 2026576 peakSaturday 25 July 2026546 peakSunday 26 July 2026665 peakMonday 27 July 2026718 peakTuesday 28 July 2026700 peakWednesday 29 July 2026751 peakThursday 30 July 2026801 peakFriday 31 July 2026732 peak

August 2026

31 days as the curve, each the highest figure that day. Behind it, 425 hourly samples from 14 Aug, which is as far back as the source keeps every hour. Weekends are shaded.

02875748611k01 Aug06 Aug11 Aug16 Aug21 Aug26 Aug31 AugSaturday 01 August 2026779 peakSunday 02 August 2026801 peakMonday 03 August 2026820 peakTuesday 04 August 2026792 peakWednesday 05 August 2026789 peakThursday 06 August 2026830 peakFriday 07 August 2026771 peakSaturday 08 August 2026628 peakSunday 09 August 2026704 peakMonday 10 August 2026705 peakTuesday 11 August 2026722 peakWednesday 12 August 2026844 peakThursday 13 August 2026969 peakFriday 14 August 2026920 peakSaturday 15 August 2026918 peakSunday 16 August 20261,057 peakMonday 17 August 20261,021 peakTuesday 18 August 20261,039 peakWednesday 19 August 2026982 peakThursday 20 August 2026933 peakFriday 21 August 2026997 peakSaturday 22 August 20261,029 peakSunday 23 August 20261,063 peakMonday 24 August 20261,003 peakTuesday 25 August 2026952 peakWednesday 26 August 2026972 peakThursday 27 August 2026963 peakFriday 28 August 2026873 peakSaturday 29 August 2026796 peakSunday 30 August 2026865 peakMonday 31 August 2026803 peak

September 2026

13 days as the curve, each the highest figure that day. Behind it, 295 hourly samples. Each dip is a night. Weekends are shaded.

023045968991801 Sep03 Sep05 Sep07 Sep09 Sep11 Sep13 SepTuesday 01 September 2026819 peakWednesday 02 September 2026797 peakThursday 03 September 2026773 peakFriday 04 September 2026842 peakSaturday 05 September 2026821 peakSunday 06 September 2026836 peakMonday 07 September 2026789 peakTuesday 08 September 2026799 peakWednesday 09 September 2026770 peakThursday 10 September 2026799 peakFriday 11 September 2026838 peakSaturday 12 September 2026850 peakSunday 13 September 2026793 peak

October 2026

Fish Idle 2: Underwater Mystery was released on Nov 15, 2024.

Not out yet.There is nothing to draw for this month.
Nothing here is interpolated or estimated; where a sample is missing the line is broken.

Game information

Free to playUpdated 13 Sep 2026, 07:21 UTC
App ID
3037410
Last updated
15 Sep 2025 build 17691957
Developer
Multicast
Publisher
MulticastGames
Release date
Nov 15, 2024
Platforms
Windows
Download size
67 MB
Install size
160 MB
Genres
Adventure, Casual, Indie, Free To Play
Game modes
Single-player
Controller support
Unknown
Achievements
30

Features & support

Steam features

Family Sharing

Controllers & input

Accessibility

Popular tags

CasualAdventurePoint & ClickArcadeTop-Down3DCuteFishingAtmosphericRelaxingNavalLinearScore AttackOpen WorldTradingSingleplayerFree to PlayIdlerResource ManagementIndie
About this gameFull description from Steam
Crush in your rainboots and hop into your boat! We are going fishing in Fish Idle 2: Underwater Mystery, a unique idle fishing arcade featuring smooth graphics and intuitive mechanics. We have no time to swing a fishing rod, so let’s streamline the process! SIMPLE AND EASY FISHING Let’s start with the basics. It’s all about automation: fish start biting as soon as you approach them, and resource indicators keep you informed while you focus on managing your Fish Kingdom effectively. The game offers advantageous upgrades to enhance your idle fishing abilities, helping you become a true fish tycoon. You’ll still need to steer your boat to chase fish schools and avoid obstacles, so don’t get too distracted by your economic prowess! UPGRADE YOUR FISH KINGDOM Once your hull is full, it’s time to get upgraded! Improvements in fishing speed let you catch more and rarer species, while increased storage capacity allows you to hold more catches in your boat. Boost your boat’s speed and defense for impact protection, and enhance your fishing rods to cast multiple lines at once. It’s all about maximizing your gains in the most efficient way, so you’ll have to use your head to figure out the best way to success! MAKE IT BIG Just like in real life, becoming a fish tycoon involves various ways to profit from your catches. The Idle Fish Farm allows you to invest and get passive income, while the Black Market lets you upgrade your Fish Kingdoms beyond OSHA standards. The Bots Shop enables you to hire hunter, fisher, and cargo ships to fish and deliver catch for you, boosting your income. If day trading is your thing, there is a Currency Exchange that has some special benefits. Tax fraud is not a crime, it’s an obligation if you want to make it big. NOW GO FISH Get ready to dive into the Fish Kingdoms and become the ultimate fish tycoon in Fish Idle 2: Underwater Mystery!
Content & age ratings2 regional ratings

Regional ratings

DEJUSl
IGRS3
System requirementsMinimum and recommended hardware

Minimum

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

Recommended

Recommended: OS: windows 10 Processor: Core I3 Graphics: no Sound Card: - VR Support: no
Supported languages6 languages
LanguageFull audio
English
Spanish - Spain
German
Korean
Russian
Japanese

A blank audio cell means full audio was not marked in the returned language list.

Screenshots & trailersScreenshots and trailers

Trailers

AchievementsTotal count and selected achievements

30 achievements in total.

Show selected achievements (may contain spoilers)
First Catch!Achievement
Casting BeginnerAchievement
Smooth SailorAchievement
Seasoned AnglerAchievement
Master FishermanAchievement
Ocean Explorer Achievement
Legend of the SeasAchievement
Sailor’s StartHidden achievement
Calm Waters Hidden achievement
Storm Chaser Hidden achievement

View all Steam achievements

DemosPlayable demos on Steam

1 developer announcement in this snapshot · times in UTC

November

  1. 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 window after switching to state you…

    Patch notes

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