Idle Aquarium

Idle Aquarium

24 achievements

Ultra Rare×7

Very Rare×11

Rare×3

Uncommon×1

Common×2

About Idle Aquarium's achievements

Idle Aquarium has 24 Steam achievements, 7 of them ultra-rare — unlocked by under 5% of players. The rarest is "Abyssal Architect", earned by just 4.3% of players. Below is the complete achievement list with global rarity and a full achievement difficulty breakdown.

Rarest achievement

4.3%

of players earned "Abyssal Architect"

🗺️ Community guides & walkthroughs

Community Ratings

No ratings yet

Difficulty—

Easy → Brutal

Enjoyment—

Meh → Loved it

Grindiness—

No grind → Huge grind

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All Idle Aquarium achievements

24 achievements

Abyssal Architect

Unlock all blocks

Ultra Rare4.3%

Million-Scale Scaler

Hold 100k coins

Ultra Rare4.3%

Ocean of Wealth

Hold 1M coins

Ultra Rare4.3%

Apprentice Keeper

Raise 100 fish

Ultra Rare4.3%

Aquatic Guru

Raise 1k fish

Ultra Rare4.3%

Piscine Sensei

Raise 10k fish

Ultra Rare4.3%

Prime Catch

Buy top-tier fish

Ultra Rare4.3%

Mount Deco-more

Place 100 decorations

Very Rare5.1%

Jackpot!

100 fish drops

Very Rare5.1%

Mariner's Endurance

Play 10 hours

Very Rare6.0%

Tank Traffic Jam

Own 30 fish

Very Rare6.0%

Midas Touch

Earn 1k premium

Very Rare6.0%

Glass Expansion

Unlock new block

Very Rare9.4%

Goldfish Tycoon

Hold 10k coins

Very Rare9.4%

Gilded Glory

Earn 10 premium

Very Rare9.4%

Golden Era

Earn 100 premium

Very Rare10.3%

Lucky Streak

10 fish drops

Very Rare11.2%

Hourglass Aquarium

Play 1 hour

Very Rare12.9%

Decor Debut

Place first decoration

Rare18.1%

Lucky Catch

First steam drop

Rare18.1%

Decade in Fish Time

Play 10 minutes

Rare21.5%

Perfect Dozen

Own 10 fish

Uncommon50.0%

Fin-tastic Start

Start the game

Common62.9%

First Splash

First fish purchase

Common71.5%