Game Review

Chillquarium

Collect colourful fish, expand your aquariums and enjoy one of the most relaxing idle games on Steam. Chillquarium is a peaceful experience that's easy to lose yourself in.

✍️ Written by: Tom 📅 Posted on 3 Jul 2026

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About The Game

Chillquarium is a relaxing idle aquarium game where you build a collection of colourful fish, care for them as they grow and gradually expand your underwater world. Rather than rushing you through objectives, the game encourages you to take your time and enjoy watching your aquariums come to life.

Buying new fish, feeding them and allowing them to mature earns you money that can be reinvested into even more species and larger aquariums. With over 150 different fish to discover, there's always another addition waiting to be unlocked.

Designed to be enjoyed over days and weeks rather than a single session, Chillquarium is the kind of game that's perfect for checking in on regularly. Its peaceful atmosphere makes it an easy game to relax with after a busy day.

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Tom's Verdict

I originally planned to spend around half an hour with Chillquarium, but found myself happily playing for much longer without really noticing the time. That's usually a good sign that an idle game has found the right balance between relaxing and rewarding.

The simple gameplay loop of buying fish, feeding them, watching them grow and expanding your aquariums works well, while the huge variety of fish gives you plenty of long-term goals. It's a game I'll happily keep checking back on each day to see how my collection develops.

My biggest disappointment is the lack of aquarium decorations, especially plants. Having kept tropical fish myself for many years, I couldn't help wishing for more ways to personalise each tank. Even so, Chillquarium remains a wonderfully calming idle game that I can happily recommend to anyone looking for a peaceful experience.