STEAMDB NEXUS

Steam app 3037410 · updated 10 Sep 2026, 17:16 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!

History chartsJune 2026 to September 2026
Last 30 days+17.8Gain+2.25%% gain1,063Peak
Fish Idle 2: Underwater Mystery Steam header artwork
MulticastMulticastGames
549playing now
79924-hour peak
44,128all-time peak
806average, last 30 days

Game information

Free to playUpdated 10 Sep 2026, 17:16 UTC
App ID
3037410
Product type
Game
Developer
Multicast
Publisher
MulticastGames
Release date
15 Nov, 2024
Release status
Released
Early Access
Platforms
Windows
Genres
Adventure, Casual, Indie, Free To Play
Game modes
Single-player
Controller support
Declared DRM
Achievements
30
Steam Deck
Playable
Metacritic

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

News & announcements1 developer announcement in this snapshot
by gdev
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

From the saved feed snapshot. Announcement dates are not game-build timestamps.