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
Birdfull
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
Birdfull is a small relaxing idle game. Attract birds with feed, try to keep them longer, and discover all of them including the unique ones! Watch the birds, generate more eggs in real time, and customize your cozy bird space.
- 2
Vquarium
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
Vquarium is a relaxing incremental-idle game where you grow your own underwater world on your screen overlay with a virtual assistant. Collect rare fish, discover sparkling variants, and decorate your tank while taking care of an adorable assistant!
- 3
Scratchers
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Simulation and Casual with Mango's Fisharium.
Scratchers is an incremental game where you scratch cards to earn cash, unlock upgrades, and hire little scratchers to do the scratching for you. Discover rare cards, and optimize your earnings as you climb to scratcher supremacy!
- 4
Black Hole Fishing
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
Black Hole Fishing is an absurd incremental game about catching, breeding, and perfecting SO MANY fish. Catch a fish, optimize its traits, then stock your pond with it as you pour fish and science into an endless singularity!
- 5
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 to different places to catch all types of fish. Bring them back for idle profits, or sell them for instant cash. Unlock research for new upgrades, and ascend for powerful bonuses. Customize your character and tanks, and make your aquarium your own!
- 6
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!
- 7
Little Aviary
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Indie and Simulation with Mango's Fisharium.
Little Aviary is a relaxing idle bird collector that sits at the bottom of your screen! Hatch unique birds, sell them, decorate, then watch them fly around your screen and perch on top of your other windows!
- 8
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.
- 9
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!
- 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
Tavern Defense
Single-player alternative to Mango's Fisharium — playable solo, no multiplayer required. Shares Strategy with Mango's Fisharium.
Tavern Defense is a Tower Defense + Roguelike Deckbuilder game where you build your deck of cards, carve your own paths for monsters, and create magnificent synergies to win the game.