Single-player games like U.N.P.O.C. Vessel of Opportunity
Below are 11 single-player Steam games similar to U.N.P.O.C. Vessel of Opportunity, 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 U.N.P.O.C. Vessel of Opportunity page.
Ranked picks
- 1
UNDER the WATER - an ocean survival game
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Indie and Adventure with U.N.P.O.C. Vessel of Opportunity.
How long do you survive on a small island in the middle of a flooded world?
- 2
Sea Warden
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Indie and Adventure with U.N.P.O.C. Vessel of Opportunity.
Sea Warden is a co-op survival adventure set on the back of Ao, a giant sea turtle journeying across a shattered world. Build, craft, explore, and defend your living base as you travel between forgotten islands in search of lost knowledge and stranded souls.
- 3
Subnautica
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Indie and Adventure with U.N.P.O.C. Vessel of Opportunity.
Descend into the depths of an alien underwater world filled with wonder and peril. Craft equipment, pilot submarines and out-smart wildlife to explore lush coral reefs, volcanoes, cave systems, and more - all while trying to survive.
- 4
Project Castaway
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Adventure and Casual with U.N.P.O.C. Vessel of Opportunity.
Project Castaway is a survival crafting title set in the Pacific Ocean. Live the life of a stranded castaway, with only yourself - and the island's inhabitants - for company! Sail the ocean, hunt, explore unique islands and gather resources as you fight for survival.
- 5
Under A New Sun
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Indie and Adventure with U.N.P.O.C. Vessel of Opportunity.
While searching for a new home, an unexpected failure in your ship has left you stranded on a planet surprisingly similar to Earth. Discover a vast open world, hunt for food, develop technologies, and build yourself a new home to survive!
- 6
Feral Blue
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Adventure with U.N.P.O.C. Vessel of Opportunity.
The old world has drowned after the Second Flood. Now, only few survivors are fighting for the new gold - clean water, wood and soil. Become a ship's captain, keep your crew alive and create your sea empire!
- 7
Bermuda - Lost Survival
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Indie and Adventure with U.N.P.O.C. Vessel of Opportunity.
Survivors, Adventurers, Explorers! Prepare for the journey of your life and experience one of the world’s most mysterious regions! The Bermuda Triangle is notorious for the vanishing of countless ships and airplanes. Will you survive long enough to reveal its secret?
- 8
Raft
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Indie and Adventure with U.N.P.O.C. Vessel of Opportunity.
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!
- 9
Valheim
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Indie and Adventure with U.N.P.O.C. Vessel of Opportunity.
A collaborative exploration and survival game for 1-10 players, set in a procedurally generated afterlife inspired by Viking culture. Battle, build, and conquer your way to a saga worthy of Odin’s patronage!
- 10
Thief of Thieves
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required. Shares Indie and Adventure with U.N.P.O.C. Vessel of Opportunity.
In Thief of Thieves you play as a cat burglar using stealth, social engineering and team members to pull off some high profile heists across the world. Based on the comic book series by Robert Kirkman, it’s time for Celia to make the leap from apprentice to master.
- 11
Route Protocol
Single-player alternative to U.N.P.O.C. Vessel of Opportunity — playable solo, no multiplayer required.
Route Protocol is a traversal-based racing and puzzle course builder. Control a robotic unit through modular obstacle courses filled with ramps, boosters, and hazards. Race in real-time heats, solve solo challenges, or build your own traversal gauntlets.