Single-player games like Runi
Below are 8 single-player Steam games similar to Runi, 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 Runi page.
Ranked picks
- 1

Undefined Survivors -アンディファインド サバイバーズ-
Single-player alternative to Runi — playable solo, no multiplayer required. Shares Adventure with Runi.
This open-world survival crafting game puts you, an amnesiac protagonist, on a journey to rediscover your true self. Explore islands and oceans, crafting weapons, watercraft, and shelters to survive. Face threats as you uncover the mysteries of your past and reclaim lost memories.
- 2

Isle Of Pirates
Single-player alternative to Runi — playable solo, no multiplayer required. Shares Adventure and Simulation with Runi.
Ahoy, Captain! Build your pirate tavern, explore hidden islands, find treasures, and expand your crew. Defend your island from enemies and rise to become a legendary pirate in Isle of Pirates!
- 3

Pirates Republic
Single-player alternative to Runi — playable solo, no multiplayer required. Shares Adventure with Runi.
Build your pirate republic from nothing. Survive, cook, trade, and plunder your way through a procedurally generated Caribbean in this open-world survival sandbox. No fantasy - just history, grit, and freedom. Play solo or with friends in co-op.
- 4

Frost Survival VR
Single-player alternative to Runi — playable solo, no multiplayer required. Shares Indie and Adventure with Runi.
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

Windrose
Single-player alternative to Runi — playable solo, no multiplayer required. Shares Adventure with Runi.
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!
- 6

Oxygen Train
Single-player alternative to Runi — playable solo, no multiplayer required. Shares Indie and Adventure with Runi.
Oxygen Train is an open-world survival train game. Wake up in a world lacking oxygen. Chop trees, mine, gather resources, upgrade your unique train. Survive by planting, fishing, farming, exploring, fighting. Build your train kingdom. Supports 1-8 online co-op.
- 7

Ylands
Single-player alternative to Runi — playable solo, no multiplayer required. Shares Adventure with Runi.
Adventure awaits you and your friends in the world of Ylands! Gather resources, craft tools, construct anything and everything, and explore the lands! Build a ship and set sail, encountering mythical animals, a wide variety of sea-life, enemies of all kinds and much more!
- 8

Voyagers of Nera
Single-player alternative to Runi — playable solo, no multiplayer required. Shares Indie and Adventure with Runi.
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.