Single-player games like Oceaneers
Below are 12 single-player Steam games similar to Oceaneers, 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 Oceaneers page.
Ranked picks
- 1

Life Below
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Strategy and Indie with Oceaneers.
Life Below is a refreshing twist on the city-building genre, set beneath the waves. Shape thriving coral reefs, revive collapsing ecosystems, and grow a living seascape in a heartfelt narrative by Rhianna Pratchett. You are the ocean's final hope.
- 2

Whiskerwood
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Strategy and Simulation with Oceaneers.
Establish a home for your industrious mice under the oppressive paw of your cat overlords in this city builder featuring complex simulations, intricate production chains, and the age-old rivalry between cat and mouse.
- 3

Corsair Cove
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Strategy and Simulation with Oceaneers.
Build a sprawling pirate haven, raise a fleet to explore the high seas, and take on the Crown to keep the Age of Piracy alive! From ale to flintlock pistols, and from scallywags to swashbucklers, you’ll need to manage complex production chains and govern a rowdy crew to reign supreme over the seas!
- 4

ALL WILL FALL
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Strategy and Indie with Oceaneers.
Build massive ocean cities and lead your people to prosperity in this post-apocalyptic survival colony sim. Featuring a physics-based 3D construction system, complex resource management, exploration, difficult political decisions, supply chains, and a robust sandbox mode.
- 5

Blossom: The Seed of Life
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Indie and Adventure with Oceaneers.
Terraform a dead planet back to life in this open world survival crafting game. Explore ruins, gather resources, print machines, drive modular vehicles, grow forests, biomes, and ecosystems. Create life and make it thrive with your own hands.
- 6

Havendock
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Strategy and Indie with Oceaneers.
Breathe easy and thrive in this cozy colony sim. Build a haven for castaways, manage resources, live your best life on the ocean. Lead your humble settlement into a high-tech society.
- 7

Flotsam
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Strategy and Indie with Oceaneers.
Sail, scavenge, and rescue survivors in a vibrant floating city-builder. Captain your drifters across the endless garbage sea to uncover soaked ruins, rusting factories, and stories from the old world.
- 8

Voyagers of Nera
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Action and Indie with Oceaneers.
Voyagers of Nera is a cooperative survival-crafting game where you must survive a magical ocean world brimming with lost spirits and deadly monsters. Sail to distant islands, build beautiful villages and surf across the waves with up to 10 players.
- 9

RimWorld
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Strategy and Indie with Oceaneers.
A sci-fi colony sim driven by an intelligent AI storyteller. Generates stories by simulating psychology, ecology, gunplay, melee combat, climate, biomes, diplomacy, interpersonal relationships, art, medicine, trade, and more.
- 10

Oxygen Not Included
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Indie and Simulation with Oceaneers.
Oxygen Not Included is a space-colony simulation game. Deep inside an alien space rock your industrious crew will need to master science, overcome strange new lifeforms, and harness incredible space tech to survive, and possibly, thrive.
- 11

Raft
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Indie and Adventure with Oceaneers.
Raft™ throws you and your friends into an epic oceanic adventure! Alone or together, players battle to survive a perilous voyage across a vast sea! Gather debris, scavenge reefs and build your own floating home, but be wary of the man-eating sharks!
- 12

Demonlore
Single-player alternative to Oceaneers — playable solo, no multiplayer required. Shares Strategy and Indie with Oceaneers.
A rogue-lite action strategy game with deck building. Fight the undead legion, forge your path, and gain powerful permanent progression. Godlike difficulty modes, mutators, heroic units, elite enemies, and unlockable rewards - endless replayability awaits!