Single-player games like Mango's Fisharium
Below are 12 single-player Steam games similar to Mango's Fisharium, 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 Mango's Fisharium page.
Ranked picks
- 1
Chillquarium
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Simulation and Casual with Mango's Fisharium.
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
Digseum
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Simulation and Casual with Mango's Fisharium.
Digseum is a short incremental journey about digging up ancient relics and building the greatest museum ever!
- 3
Fish to Dish: Idle Sushi
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Casual with Mango's Fisharium.
Welcome to Fish to Dish: Idle Sushi! This is a relaxing and enjoyable idle fishing game that can sit at the bottom or any corner of your screen, allowing you to enjoy a leisurely sea fishing time in your busy life.
- 4
Fishing Inc
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
Fishing Inc is a cozy incremental fishing game! Catch fish, earn cash, and unlock powerful skills. Master new ponds, fill your Fish Log with Legendary catches, and become the ultimate angler!
- 5
Cornerpond
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
A chill idle-fishing desktop toy in the corner of your screen. Buy upgrades, catch rare fish, and customize your avatar at your own pace!
- 6
Idle Waters
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Strategy and Indie with Mango's Fisharium.
A relaxing idle fishing game that waits for you at the bottom of your screen. CATCH fish, BUY upgrades, COMPLETE your collection, and DISPLAY them in your aquarium.
- 7
Tiny Aquarium: Social Fishkeeping
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
A happy aquarium that lives at the bottom of your screen! Tiny Aquarium is a social idle simulator that keeps growing, even when offline. Hatch, sell fish, decorate, go fishin’, and visit your friends’ aquariums with bite-sized daily sessions.
- 8
Lured In
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
Run your own cozy aquarium! Travel far and wide to catch exotic fish. Put them on display for idle profits, or sell them for instant cash. Unlock research for new upgrades, and ascend for powerful bonuses. Customize your shop, character, and tanks to make your aquarium your own!
- 9
Soba's Gunpaw
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
Soba’s Gunpaw is a Short Incremental - Bullet Heaven game. Destroy everything, collect resources, then choose upgrades from a massive skill tree! Designed to be completed in around 4 hours.
- 10
Office 29
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
You overslept at work, and when you woke up, everyone was already gone. The office is eerily empty, and strange anomalies seem to have taken over. Explore the office, gather your 29 items, and go home.
- 11
Cozy Desktop Konbini
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
Run your own Konbini in this Cozy and Relaxing Idle Game that stays at the bottom of your screen, accompanied by soothing lofi musics. Sort your selling products on the shelves. Decorate your Konbini, unlock new products and decorations—all while you work or relax.
- 12
Master Healer Kale with useless party
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Strategy and Indie with Mango's Fisharium.
A short incremental game where you play as a Healer in a party. Your main job is to keep your party alive. Upgrade 200+ skills in a skill tree, from healing to party damage. Designed to be completed in around 4 hours.