Single-player games like Peacequarium
Below are 14 single-player Steam games similar to Peacequarium, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Peacequarium page.
Ranked picks
- 1

Chillquarium
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Simulation and Casual with Peacequarium.
Chillquarium is a cozy and relaxing idle game. Buy fish and raise them in real time, then sell them to turn a profit! Customize your aquarium as you progress from a simple starter tank to your dream setup by filling your collection with rare exotic fish and ultra-rare color variants!
- 2

Lost and Found Co.
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Casual with Peacequarium.
Lost and Found Co. is a hidden object adventure in a cozy and immersive world. Join a cast of lively characters on their epic journey across countless magical locations. Find lost items, solve puzzles, and help a tiny dragon regain her power!
- 3

Megaquarium
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Simulation and Casual with Peacequarium.
The public aquarium simulator. Design your displays, look after your fish, manage your staff and keep your guests happy! It's all in a day's work as the curator of your very own Megaquarium.
- 4

Cast n Chill
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Simulation with Peacequarium.
Cast n Chill is a relaxing fishing game where you explore serene lakes, rivers, and oceans. Catch rare fish, upgrade your gear and reel in legendary catches - all with your loyal companion by your side.
- 5

Alba: A Wildlife Adventure
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Casual with Peacequarium.
Even the smallest person can make a big difference. Join Alba, as she sets out to save her beautiful island and its wildlife. And possibly start a revolution.
- 6

Discounty
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Simulation and Casual with Peacequarium.
Manage your own discount supermarket! Get caught up in small-town drama, organize and plan your shop's layout, and strike lucrative trade deals as you expand your secretive aunt's business empire. Selling more frozen fries will surely heal this broken community...right?
- 7

Time Is Honey
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Simulation and Casual with Peacequarium.
Time Is Honey is a relaxing idle game where you manage bee hives. Collect unique bees by opening bee packs, take care of them in real-time and then turn it all into profit. Unlock, upgrade and customize your hives, and enjoy completing your collection of bees.
- 8

Paper Trail
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Casual with Peacequarium.
Paper Trail is a top-down puzzle adventure about leaving home, set in a foldable, paper world.
- 9

Choo Choo Survivor
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Simulation with Peacequarium.
Drive your train to safety while shooting down endless hordes of zombies blocking your way. Upgrade your weapons and abilities and become absurdly powerful!
- 10

Gamer To Game Developer Series 1: More Than a Gamer
Single-player alternative to Peacequarium — playable solo, no multiplayer required.
Welcome to the new GTGD S1, a Unity 2017 multiplayer tutorial for game developers. This training course is of intermediate difficulty so you should first be familiar with the basics of coding in Unity. This tutorial will teach you the key elements of the Unity 2017 multiplayer system.
- 11

Guild Commander
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Simulation with Peacequarium.
In Guild Commander you manage your guild to victory! Deploy your guild members and save your world from the Necro Lord!
- 12

Weekend Drive
Single-player alternative to Peacequarium — playable solo, no multiplayer required.
Giants, zombies, aliens, dinosaurs, a fully destructible city with fun vehicles (including helicopter!) and weapons at your disposable, yes Weekend Drive is way ahead of the curve! Get set for a fun unique full on action first person shooter experience!
- 13

Model City
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Simulation and Casual with Peacequarium.
Welcome to Model City, a calm relaxing small game where you can't lose or do anything wrong.
- 14

Home By The River
Single-player alternative to Peacequarium — playable solo, no multiplayer required. Shares Simulation with Peacequarium.
This is a resource gathering, crafting RPG, where you build your home from scratch and make whatever design you want. You start with a dead polluted land that you transform into a beautiful homestead by a river. Play single player or LAN Co-op.