ChillTank
If you loved collecting just one more fish

Games like Chillquarium.
What would you love next?

Maybe it was the rare colour. Maybe it was checking in on a tank that had quietly grown. Here are seven cozy fish games for different parts of that feeling, with the similarities and differences made clear.

Choose the feeling you want more of ↓
ChillTank promotional artwork of tropical fish below a sunlit low-poly island bridge
Our own little underwater escape. ChillTank promotional artwork.

We make ChillTank, which is included here. These comparisons are written from the official descriptions linked below, not independent hands-on reviews. Other games have no affiliation with or endorsement of ChillTank. Game names and trademarks belong to their respective owners. Check Steam for current features and availability. Images on this page show ChillTank.

There is more than one kind of similar

Pick the part of Chillquarium you enjoyed.

For collecting plus breeding and a habitat of your own, start with ChillTank. For drawing the inhabitants yourself, explore Drawquarium. For idle fishkeeping beside another application, look at Tiny Aquarium. For screen-bottom breeding, try Cozy Littlequarium. Fish Game, FISHERY and My Koi are further from Chillquarium’s pack-opening loop, but fit players looking for detailed care, tank design or a peaceful pond.

  1. ChillTankCollecting, breeding & habitats
  2. DrawquariumDrawing & aquarium sandbox
  3. Tiny Aquarium: Social FishkeepingDesktop idle companion
  4. Cozy LittlequariumDesktop care & breeding
  5. Fish GameDetailed freshwater simulation
  6. FISHERYStylized aquarium sandbox
  7. My KoiRelaxing koi pond
Our pick for a little world of your own

ChillTank

“I want more of a home for my fish.”

Steam platforms
Windows · macOS · Linux
Availability
Coming soon · free demo available
Explore on Steam ↗Try the free demo ↗

The familiar feeling

A growing collection, colourful discoveries and fish progression give you reasons to return.

What changes

ChillTank adds individual traits, breeding and a low-poly habitat to decorate. It is a dedicated offline singleplayer game rather than a screen-bottom idle companion. The full game is upcoming; a free demo is available.

For fishkeepers who love to draw

Drawquarium

“I want to create the fish myself.”

Steam platforms
Windows
Availability
Planned Q4 2026 · free demo available
Explore on Steam ↗

The familiar feeling

Caring for an aquarium and watching its inhabitants develop provides a familiar reason to check in.

What changes

Drawquarium centres on drawing your own fish and plants. Aquarium customization and wallpaper mode give those creations a home. Choose it when making the inhabitants matters more to you than opening fish packs.

A tiny companion with a social side

Tiny Aquarium: Social Fishkeeping

“I want an aquarium beside my other work.”

Steam platforms
Windows · macOS · Linux
Availability
Released
Explore on Steam ↗

The familiar feeling

Hatching fish and watching the collection grow will feel familiar to idle fish collectors.

What changes

Tiny Aquarium uses a small desktop format, continues fish growth while you are away and adds fishing, visits and social fishkeeping.

Small tank, gentle routine

Cozy Littlequarium

“I want a tiny tank with breeding.”

Steam platforms
Windows
Availability
Released
Explore on Steam ↗

The familiar feeling

Collecting and caring for fish provides a gentle aquarium routine.

What changes

Cozy Littlequarium combines breeding and decoration with a screen-bottom aquarium. It suits someone who wants a companion visible alongside other applications.

For the freshwater fishkeeper

Fish Game

“I want to understand the fish themselves.”

Steam platforms
Windows
Availability
Released
Explore on Steam ↗

The familiar feeling

You build up a tank and spend time observing its inhabitants.

What changes

Fish Game emphasizes freshwater fish personalities, relationships, plants and water quality. That makes it a simulation alternative, not a replacement for Chillquarium’s pack-opening loop. Breeding is listed as planned.

Build an underwater composition

FISHERY

“I mostly want to build a beautiful tank.”

Steam platforms
Windows
Availability
Early Access
Explore on Steam ↗

The familiar feeling

Fish and an evolving aquarium are still the centre of the experience.

What changes

FISHERY moves the focus toward designing and maintaining a stylized aquarium. Look here for aquascaping and observation; check the current Early Access information first.

A quieter place to return to

My Koi

“I want something even quieter.”

Steam platforms
Windows on Steam
Availability
Released
Explore on Steam ↗

The familiar feeling

Returning to feed fish and see them grow provides a familiar sense of gentle progress.

What changes

My Koi trades the aquarium for a pond and concentrates on koi care and observation. It is the alternative for a slower daily ritual rather than a broad aquarium collection.

Which alternative should I try first?

Start with the format. If you want the aquarium visible while doing something else, a desktop companion is the closest fit. If you want a dedicated place to collect, care for fish and decorate, try ChillTank’s free Steam demo. If you are mainly interested in planted tanks and fish behaviour, explore a more detailed aquarium simulator.

If none of those sound quite right, you might enjoy the broader choices in our top 10 cozy aquarium games on Steam, including Drawquarium, Aquarium Designer and Megaquarium.