Single-player games like Undefined Survivors -アンディファインド サバイバーズ-
Below are 8 single-player Steam games similar to Undefined Survivors -アンディファインド サバイバーズ-, 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 Undefined Survivors -アンディファインド サバイバーズ- page.
Ranked picks
- 1

Runi
Single-player alternative to Undefined Survivors -アンディファインド サバイバーズ- — playable solo, no multiplayer required. Shares Adventure with Undefined Survivors -アンディファインド サバイバーズ-.
A cooperative low-poly survival adventure. Gather resources, craft tools, build shelter, and explore a vast wilderness with friends as you fight to endure together.
- 2

Island Raft Survival 2021: Ocean Escape
Single-player alternative to Undefined Survivors -アンディファインド サバイバーズ- — playable solo, no multiplayer required. Shares Adventure and Early Access with Undefined Survivors -アンディファインド サバイバーズ-.
Join Realistic Island Raft Survival Simulator with Creative Survival Modes!
- 3

Sundermead
Single-player alternative to Undefined Survivors -アンディファインド サバイバーズ- — playable solo, no multiplayer required. Shares Action and Adventure with Undefined Survivors -アンディファインド サバイバーズ-.
Sundermead is an open-world, casual RPG where you can build a farm to live peacefully out in the wilderness with your friends. Beware though, there is more to this land than first meets the eye!
- 4

Frost Survival VR
Single-player alternative to Undefined Survivors -アンディファインド サバイバーズ- — playable solo, no multiplayer required. Shares Adventure with Undefined Survivors -アンディファインド サバイバーズ-.
Sandbox Survival in VR. Face a frozen wilderness solo or in co-op - build a shelter, craft tools, hunt for food, and manage your resources to endure harsh conditions. Strategize your moves against unpredictable weather and lurking dangers. And remember to keep yourself safe and sane!
- 5

Open Fishing XL
Single-player alternative to Undefined Survivors -アンディファインド サバイバーズ- — playable solo, no multiplayer required.
Open Fishing XL is an open world fishing game focused on creating a relaxing experience. Fill out a book with 115 fish species, buy rods, items, boats and more, explore the large map, identify cute insects, draw your own map, and enjoy fishing without worries with intuitive fishing mechanics.
- 6

Crazy Caveman
Single-player alternative to Undefined Survivors -アンディファインド サバイバーズ- — playable solo, no multiplayer required. Shares Action and Adventure with Undefined Survivors -アンディファインド サバイバーズ-.
Become a caveman, survive by building, fishing, and hunting.
- 7

Escape Island
Single-player alternative to Undefined Survivors -アンディファインド サバイバーズ- — playable solo, no multiplayer required. Shares Action and Adventure with Undefined Survivors -アンディファインド サバイバーズ-.
"Escape Island: An exciting survival adventure! Your mission: Escape from a deserted island full of dangers. Explore, hunt and collect resources to survive. But beware of lurking threats! Use your intelligence and skills to overcome obstacles and escape!"
- 8

Everdream Valley
Single-player alternative to Undefined Survivors -アンディファインド サバイバーズ- — playable solo, no multiplayer required. Shares Adventure with Undefined Survivors -アンディファインド サバイバーズ-.
A farming adventure with a dash of magic. Play solo or up to a 4-player coop. By day, restore your quaint farm into a summer paradise. Explore, raise crops, care for animals and rebuild your home. At night inhabit various creatures through your dreams and bring enchantment to the valley.