Fish Idle 2: Underwater Mystery

About

Fish Idle 2: Underwater Mystery is a single player open world management game. It was developed by Multicast and was released on November 15, 2024. It received neutral reviews from players.

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 in…

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Play Modes

Single-Player

Fish Idle 2: Underwater Mystery screenshot

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59%

Audience ScoreBased on 536 reviews

gameplay18 positive mentions

grinding51 negative mentions

Relaxing and addictive gameplay, ideal for casual play and downtime.
Well-designed progression and crafting systems, with satisfying upgrade mechanics.
Ability to earn and trade Steam marketplace items adds an interesting layer of engagement.

No cloud save support causes loss of progress when reinstalling or switching devices.
Extremely grind-heavy with slow progression, often forcing pay-to-win mechanics for advancement.
Numerous bugs, including quest chest reward failures and crashes, with little to no developer support.

gameplay
57 mentions Positive Neutral Negative
32%
57%
11%
The gameplay features a calm, relaxing underwater theme with simple, idle mechanics focused on catching fish, upgrading boats, and completing quests, making it enjoyable for stress-free play. However, it is criticized for being repetitive, grind-heavy, and heavily reliant on pay-to-win mechanics with slow progression and limited new content beyond early stages. While some find it engaging and addictive, many view it as a cash grab with frustrating mechanics that hinder long-term enjoyment.
- “Fish Idle 2: Underwater Mystery captivated me with its charming underwater world and addictive gameplay.”
- “The gameplay is super satisfying—catching fish, upgrading your boat, and completing quests feels incredibly rewarding.”
- “We now have a game that not only lets you earn but also offers gameplay that's far more engaging and complex than just passively watching the screen.”
- “Not to mention the horrible gameplay: 99.99% pay-to-win, abandoned by the developers, rewards are buggy, and it takes years of grinding to reach 100%.”
- “You end up running the game 24/7 to buy an upgrade you don't notice in the gameplay and then repeat this over and over again to hopefully gain power after doing this for like 6 months.”
- “You progress through gates based on level, but can't actually catch the fish you need to make real progression and upgrade your ship. All the actual progression after the first two hours of gameplay is locked behind fish that only respawn in small packs, spawn with dangerous fish you can't idle even with hull upgrades, or the fish run outside of your catch radius.”
grinding
52 mentions Positive Neutral Negative
2%
98%
Reviews consistently highlight grinding as a core but highly excessive aspect of the game, with many finding it tedious, slow, and frustrating—especially due to repetitive tasks, time-gating, and the need for active play rather than true idling. Grinding is often linked with a pay-to-win model, where spending money can bypass the exhaustive farming. While some players enjoy the grind and find it satisfying or relaxing, the overall sentiment points to poor game design that leans heavily on long, repetitive farming and progression barriers.
- “Not to mention the horrible 'gameplay': 99.99% pay to win, abandoned by the developers, rewards are buggy, and it takes years of grinding to reach 100%.”
- “The game is very, very farming oriented; you are going to be spending hours, and I do mean hours, farming things over and over and over.”
- “Getting most of the in-game currencies requires active play and many many hours of painfully slow grinding and waiting for tiny groups of fish to respawn over and over again.”
story
42 mentions Positive Neutral Negative
7%
86%
7%
The story-driven quest system offers engaging fishing and crafting progression, but is heavily marred by frequent bugs, long cooldown timers, and unreliable quest rewards, leading to frustration and perceived pay-to-win mechanics. While the premise is enjoyable and relaxing, persistent technical issues with quest completion and reward delivery significantly hinder the narrative and gameplay experience.
- “I love that you have quests with this cute idle fishing game.”
- “The gameplay was simple but engaging, and the story was interesting enough to keep me hooked.”
- “You get a bunch of quests around hostile fish.”
- “We do quests but don't receive any chest and it says something went wrong, you get it later but nothing happened anyway... you're going to lose your time playing this, just pass your way.”
- “Alright folks, I tried all the way till the 'special quests to gain chest' that you can apparently 'trade' on Steam market which apparently doesn't take as much time as I thought but after you do the quest you'll get a 120s timer saying your chest is being delivered and when you waited it out it just goes 'delivery failed will be delivered later' so yeah, don't.”
- “The daily quests and rewards are buggy and you might not get them at all.”
monetization
31 mentions Positive Neutral Negative
3%
26%
71%
The monetization of this game is widely criticized as a blatant and aggressive cash grab, with frustratingly slow progression designed to push players into costly microtransactions, some exceeding $3,000. Frequent and intrusive ads, a grind-heavy gameplay loop, and overpriced in-game marketplace items contribute to a negative experience, making it feel exploitative and disappointing despite initial appeal.
- “Garbage phone game that is all about aggravating you into making microtransactions.”
- “There's also in-app purchases for items that cost over $3,000.”
- “Cash grab and game is nothing like the video.”
graphics
15 mentions Positive Neutral Negative
47%
33%
20%
The graphics are generally praised for their charming, cute, and peaceful art style that enhances the relaxing atmosphere, though some users find them simplistic or lacking advanced options like resolution settings. The visual design is often described as cozy and well-suited for prolonged play, contributing positively to the overall experience. However, a few users have noted that the graphics can feel bland or even cause discomfort over extended gaming sessions.
- “The graphics are stunning, and the progression is so satisfying.”
- “The graphics and atmosphere are so peaceful.”
- “The graphics are unique and well-designed, and the game’s soundtrack fits it perfectly.”
- “Middle-school graphics.”
- “The bland visuals make me physically ill a hundred hours in; I feel like I'll puke if I play anymore of this.”
- “There's no option to change the resolution and no useful graphics tweaks.”
stability
10 mentions Positive Neutral Negative
100%
The game suffers from significant stability issues, including frequent bugs affecting gameplay, rewards, and lootbox collection. Daily quests and time-locked events are often unreliable, leading to lost or delayed rewards, while overall bugs contribute to a frustrating, grind-heavy experience. Developers appear to have abandoned updates, leaving critical features incomplete and the game unstable.
- “Very buggy and full of text strings from programming code.”
- “Games very buggy and even rewards locked behind time-locked events will sometimes just disappear into the void.”
- “The daily quests and rewards are buggy and you might not get them at all.”
music
4 mentions Positive Neutral Negative
75%
25%
The music in the game is generally well-received for complementing the graphics and creating a calm, enjoyable atmosphere, though some users initially found it lacking but grew to appreciate it over time.
- “The game's soundtrack perfectly complements its unique and well-designed graphics.”
- “I heard the music in my sleep and was surprisingly not mad about it.”
- “The calm music makes the gameplay enjoyable.”
- “The music is bad, would like something else.”
atmosphere
2 mentions Positive Neutral Negative
100%
The atmosphere is consistently praised for its peaceful and relaxing qualities, with graphics that enhance the overall calming experience.
- “The graphics and atmosphere are so peaceful.”
- “Graphics and atmosphere are perfect for relaxation.”
optimization
1 mentions Positive Neutral Negative
100%
The game suffers from very poor optimization, resulting in noticeably bad performance.
- “Very bad performance.”

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24h Median play time

24h Average play time

24-24h Spent by most gamers

*Based on 1 analyzed playthroughs

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Frequently Asked Questions

Fish Idle 2: Underwater Mystery is a open world management game.

Fish Idle 2: Underwater Mystery is available on PC and Windows.

On average players spend around 24 hours playing Fish Idle 2: Underwater Mystery.

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

Fish Idle 2: Underwater Mystery was developed by Multicast.

Fish Idle 2: Underwater Mystery has received neutral reviews from players. Most players liked Fish Idle 2: Underwater Mystery for its gameplay but disliked it for its grinding.

Fish Idle 2: Underwater Mystery is a single player game.

Similar games include Shop Titans, Crafting Idle Clicker, Shop Heroes, Idle Planet Miner, IdleOn and others.

Fish Idle 2: Underwater Mystery

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