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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!
What players say
Steam review score and the most-helpful voices, which may include critical ones. Score via Steam as of 2026-09-04 · quoted reviews as of 2026-05-13.
What reviewers agree on
23 of the 69 reviews raise this.
“I've been searching for a relaxing game like this for ages. So glad I finally found it, I can play it without tryharding so I really enjoy it.”
“Its a nice idle game. i play it while watching my shows and its nice to see numbers grow when you are busy. Dont play it trying to make money with their silly marketplace items. You wont”
“Neat idle fisher game. Market tradeables seem to be the focus.”
7 of the 69 reviews raise this.
“Its a nice idle game. i play it while watching my shows and its nice to see numbers grow when you are busy. Dont play it trying to make money with their silly marketplace items. You wont”
“It’s simple, addictive, and does exactly what it says on the tin. If you like seeing numbers go up while looking at pretty blue water, this is a solid catch.”
“This game is so much fun! You just spin the wheel and watch your bank balance go up. It's like being an explorer, but without leaving your house. You can travel to all these different places and win prizes. It's so…”
5 of the 69 reviews raise this.
“I've been searching for a relaxing game like this for ages. So glad I finally found it, I can play it without tryharding so I really enjoy it.”
“Good game when I don't feel like playing games. Easy and relaxing pure grinding game. Use your brain in some points with some strategy. Leave it running auto catching if you get stuck.”
14 of the 69 reviews raise this · 2 of them still recommend the game.
12 of the 69 reviews raise this · 2 of them still recommend the game.
10 of the 69 reviews raise this · 2 of them still recommend the game.
10 of the 69 reviews raise this · 3 of them still recommend the game.
“For such an old game, the submarine isn't working and the whirlpool isn't working. In-game deliveries for items is very glitchy and if you don't do it just right it will say you can't have the item. This would be a…”
8 of the 69 reviews raise this · 1 of them still recommend the game.
“For such an old game, the submarine isn't working and the whirlpool isn't working. In-game deliveries for items is very glitchy and if you don't do it just right it will say you can't have the item. This would be a…”
“I am writing this review for those who are both new and former players of this idle game. I recently got a new pc, and upon installing the game on it and hopping in, I have noticed my entire game progress from before is…”
Counted across 69 English reviews, sampled to match this game's 66.3% positive rating · as of 2026-05-13
“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“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“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 playedPlayer activity
Monthly average concurrent players. Live data self-collected from the Steam API · history through 2026-06 via SteamCharts.
Achievement stats
Global completion rates across all Steam players — a data view of how far people actually get. Source: Steam official stats · as of 2026-09-26.
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.
Latest official news
Developer announcements via the Steam news API — links go to the original posts. More across all games on the news hub.
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
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Screenshots
Official Steam store screenshots — click any shot to enlarge.
Facts & details
From the Steam store record, snapshot 2026-05-13.
| Genres | Adventure, Casual, Indie, Free To Play |
| Player tags | Casual · Adventure · Point & Click · Arcade · 3D · Top-Down · Cute · Atmospheric · Relaxing · Fishing · Naval · Linear (SteamSpy community voting) |
| Features | Single-player |
| Languages | English, Spanish - Spain, German, Korean, Russian, Japanese |
| Achievements | 30 |
Minimum system requirements (PC)
Minimum: OS: windows 10 Processor: Core I3 Graphics: no Sound Card: - VR Support: no