Single-player games like Nia and The Abyss
Below are 8 single-player Steam games similar to Nia and The Abyss, 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 Nia and The Abyss page.
Ranked picks
- 1
Fishing Echoes
Single-player alternative to Nia and The Abyss — playable solo, no multiplayer required. Shares Adventure and Simulation with Nia and The Abyss.
Fishing Echoes is a fantasy fishing game where you catch elemental fish to save the realm from a world-devouring maelstrom.
- 2
City Of Corals
Single-player alternative to Nia and The Abyss — playable solo, no multiplayer required. Shares Indie and Adventure with Nia and The Abyss.
Save the coral reef city in this cute tiny adventure game! Meet the colourful residents of this underwater city, explore the streets, befriend different species of fish and help them restore the corals to their former glory!
- 3
Fishlets
Single-player alternative to Nia and The Abyss — playable solo, no multiplayer required. Shares Indie and Simulation with Nia and The Abyss.
Decorate your own aquariums and care for a variety of fish in Fishlets, a cozy fish-collecting sim! Feed, breed, sell, and collect fish and aquatic critters in the virtual tanks mode. Drop into Adventure mode and progress through 7 unique levels, unlocking even more fish while fending off threats!
- 4
GRAV Fishing
Single-player alternative to Nia and The Abyss — playable solo, no multiplayer required. Shares Indie and Adventure with Nia and The Abyss.
Fish are drifting in space! Play as an interstellar angler tasked with returning them to their aquatic home. Explore the ocean planet Aquaria, restore it's struggling ecosystems and save floating fish.
- 5
Cast n Chill
Single-player alternative to Nia and The Abyss — playable solo, no multiplayer required. Shares Indie and Simulation with Nia and The Abyss.
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.
- 6
Koi Farm
Single-player alternative to Nia and The Abyss — playable solo, no multiplayer required. Shares Indie and Simulation with Nia and The Abyss.
A koi breeding game.
- 7
FISHERY
Single-player alternative to Nia and The Abyss — playable solo, no multiplayer required. Shares Indie and Simulation with Nia and The Abyss.
Fishery is a stylized aquarium simulation game. Harness your creativity to build and maintain beautiful aquatic habitats. Then relax and watch your beautiful fish enjoy their home.
- 8
Creatura
Single-player alternative to Nia and The Abyss — playable solo, no multiplayer required. Shares Indie and Simulation with Nia and The Abyss.
Seed, Breed, Create. From single cell organisms to complex ecosystems. Evolve every part of your own unique aquarium / terrarium by applying scientifically accurate principles of natural and artificial selection, in Creatura - ultimate Virtual Evolution Vivarium Simulator.