Single-player games like Project Castaway
Below are 13 single-player Steam games similar to Project Castaway, 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 Project Castaway page.
Ranked picks
- 1
Stranded Deep
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Adventure with Project Castaway.
Take the role of a plane crash survivor stranded somewhere in the Pacific Ocean. Come face to face with some of the most life threatening scenarios that will result in a different experience each time you play. Scavenge. Discover. Survive.
- 2
Sunkenland
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Action with Project Castaway.
Get ready for a Waterworld-themed survival game with modular base building, sunken city scavenging, crafting, base defense, and invasions of NPC clans for resources and territory. Ready for the water apocalypse?
- 3
Green Hell
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Action and Adventure with Project Castaway.
Plunge into the open-world survival simulation set in the extreme conditions of the uncharted Amazon jungle. Use real-life survival techniques to craft, hunt, fight, and gather resources, set a makeshift shelter, or raise a fortress. Survive alone or team up with your friends and challenge the jungle together.
- 4
Survival: Fountain of Youth
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Action and Adventure with Project Castaway.
Survival: Fountain of Youth is a challenging single-player open-world adventure game set on the Caribbean islands. Survive as a shipwrecked 16th-century explorer, craft tools and shelter, and uncover the secrets of both an ancient civilization and your own fate.
- 5
Force of Nature
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Action and Adventure with Project Castaway.
Force of Nature is a Sandbox game that combines Action, Adventure, RPG, Strategy and Management genres
- 6
The Lord of the Rings: Return to Moria™
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Action and Adventure with Project Castaway.
A survival crafting adventure set in the Fourth Age of Middle-earth. Lead the Dwarves to reclaim Moria - mine, build, and battle through procedurally generated depths alone or with up to 8 players in co-op. It is time to return to Moria!
- 7
Smalland: Survive the Wilds
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Action and Adventure with Project Castaway.
Experience a big adventure on a tiny scale! Enjoy multiplayer survival in a vast, hazardous world. Preparation is key when you're this small & at the bottom of the food chain. Craft weapons & armour, tame & ride creatures, build encampments & explore a strange new land.
- 8
Voidtrain
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Action and Adventure with Project Castaway.
Become a crew member of an Interdimensional Express Train! Discover a new world full of mysterious creatures, enemies and places. Upgrade and customize your train, gather new materials and build better weapons. Play solo or online сo-op with up to 4 people.
- 9
Sons Of The Forest
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Action and Adventure with Project Castaway.
Sent to find a missing billionaire on a remote island, you find yourself in a cannibal-infested hellscape. Craft, build, and struggle to survive, alone or with friends, in this terrifying new open-world survival horror simulator.
- 10
Raft
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Adventure with Project Castaway.
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!
- 11
Windrose
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Action and Adventure with Project Castaway.
Embark on a PvE survival adventure in the Age of Piracy. Fight on land and sea, solo or with friends. Build, craft and explore vast open world filled with dark secrets. Master soulslite combat and take on challenging bosses, command your ship and plunder unspoken treasures!
- 12
Tech Corp.
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Casual with Project Castaway.
Tech Corp. is a game where you try to become the biggest tech company in the world . Your goal is to become the next big shot in the tech industry. The game also takes place through history. Starting in the early 90's and going to present time.
- 13
Quiz Night Tonight!
Single-player alternative to Project Castaway — playable solo, no multiplayer required. Shares Casual with Project Castaway.
Step into an online Game Show! Trivia has never been so much fun. Featuring thousands questions, on a variety of genres/topics. Experience Trivia like never before. Play with or without VR.