Chillquarium is a serene digital sanctuary that hits all the right notes for fans of cozy idle games. It strips away high-stress mechanics and timers, replacing them with lush pixel art fish gently swimming across your screen to a peaceful soundtrack.
The core loop of opening fry packs, feeding your fish, and watching them slowly grow into majestic adult specimens is surprisingly addictive. The excitement of pulling a ultra-rare 'Shiny' or 'Rainbow' variant brings a fun collecting element akin to card trading games, without feeling aggressive or pushy.
Whether you leave it running in the background while working or log in for a few minutes to feed your collection, Chillquarium is a delightfully charming way to unwind.
Not every game needs to be a hardcore test of reflexes or strategic endurance. At forty, after a long day dealing with complex real-world compliance and web engineering, there is something modest and honest about checking in on a virtual aquarium. Chillquarium doesn't pretend to be an epic masterpiece; it is a straightforward idle game about feeding fish and collecting rare species.
It lacks deep interactive mechanics, functioning more like digital wallpaper with progression elements. However, unlike predatory free-to-play cash grabs, its gentle pace and low-stress environment make it a surprisingly pleasant time-waster if you temper your expectations.
Performance: Stable background idle processing with low battery drain.
Buy if: You want a peaceful, low-stress idle game to unwind with.
Skip if: You require active, high-intensity gaming mechanics.
Available on: iPhone, iPad
Version 1.2.1Sat Aug 08 2026
- Fixed minor tweaks
Requires iOSΒ 17.0 or later. Compatible with iPhone, iPad, and iPodΒ touch.Build your dream aquarium in this relaxing idle collecting game.
Chillquarium is a cozy aquarium simulation where you collect fish, grow your tank, and create a thriving underwater world. Buy fish, raise them in real time, and sell them for profit as you expand from a small starter tank into a massive aquarium filled with rare and exotic species.
Discover ultra-rare color variants, complete your collection, and customize your tank to match your style. Whether you want to optimize your profits or simply relax and watch your fish, Chillquarium is designed to be both rewarding and calming.
COLLECT, GROW, AND EXPAND
Start with a simple aquarium and grow it into a vibrant underwater ecosystem. Collect over 180 unique fish species and unlock rare and ultra-rare variants for each one. Can you complete the full collection?
IDLE AQUARIUM TYCOON GAMEPLAY
Earn money even while youβre away. Your fish grow in real time, allowing you to build a profitable aquarium empire at your own pace. Manage your fish, optimize your tank, and expand your setup.
DISCOVER RARE FISH & VARIANTS
Open booster packs to unlock new fish and discover rare and exotic species. Hunt for ultra-rare color variants and build the ultimate collection.
CUSTOMIZE YOUR DREAM AQUARIUM
Design and personalize your aquarium with different layouts and decorations. Create a peaceful environment where your fish can thrive.
RELAXING AND COZY EXPERIENCE
Enjoy a calm and stress-free game with soft visuals and real-time day-night cycles. Perfect for players who love cozy games, idle games, and collecting experiences.
FEATURES:
- Collect 180+ unique fish species
- Unlock rare and ultra-rare variants
- Idle gameplay: earn money while offline
- Expand and upgrade your aquarium
- Open booster packs to discover new fish
- Customize your tank and decorations
- Relaxing visuals and real-time day-night cycle
If you enjoy idle games, aquarium simulators, collecting games, or relaxing cozy experiences, Chillquarium is the perfect game for you.
















Chillquarium is a cozy, relaxing idle fish-keeping simulator. Buy booster packs of tiny fry, feed them as they grow in real-time, and discover hundreds of unique fish species and rare shiny variants. Sell fully grown fish to generate income, expand your tanks, and customize your personal aquatic paradise at your own comfortable pace.
Over 100 unique fish species to collect and discover
Multiple rare color variants including Shiny, Gold, and Rainbow
Soothing pixel art aesthetic and gentle ambient soundtrack
Zero stress gameplay with passive offline growth income
Customizable tank backgrounds and decoration options
Upgrade your fish food quality early on. High-tier food speeds up growth rates significantly, allowing you to turn small fry into valuable adult fish much faster.
Save funds to buy higher-tier pack types. These have elevated probabilities for Rainbow, Gold, and Shiny color variants which command massive sales prices.
Official listing.
Feed your tank inhabitants to help them grow from tiny fry into mature specimens, earning passive revenue over time.
Open thematic fish packs to complete your encyclopedia, chasing rare color mutations and giant species variants.
Yes, your fish continue to mature and generate passive income even when the app is closed.