IMHO.

Single-player games like Project Cobalt

Below are 16 single-player Steam games similar to Project Cobalt, 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 Cobalt page.

Ranked picks

  1. 1
    Terafall: Survival — Steam game cover

    Terafall: Survival

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Indie with Project Cobalt.

    Terafall is a procedurally generated, open-world sandbox RPG all about exploring a new world to save your own dying planet from extinction, with a strong focus on non-linearity and character progression.

    2023ActionIndieAdventure10.99 USDSingle-playerSimilar games →
  2. 2
    Satisfactory — Steam game cover

    Satisfactory

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Strategy and Indie with Project Cobalt.

    Satisfactory is a first-person open-world factory building game with a dash of exploration and combat. Play alone or with friends, explore an alien planet, create multi-story factories, and enter conveyor belt heaven!

    2024StrategyIndieAdventure39.99 USDDeck VerifiedSingle-playerSimilar games →
  3. 3
    The Forest — Steam game cover

    The Forest

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Indie with Project Cobalt.

    As the lone survivor of a passenger jet crash, you find yourself in a mysterious forest battling to stay alive against a society of cannibalistic mutants. Build, explore, survive in this terrifying first person survival horror simulator.

    2018ActionIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Ars Notoria — Steam game cover

    Ars Notoria

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Adventure with Project Cobalt.

    Ars Notoria is an open-world survival crafting game set in a rich fantasy world. Learn six distinct schools of magic, gather resources, build your base, expand your influence, and stand against the ever-shifting threat of the Enthralled. You are the one destined to change the kingdom.

    2025ActionAdventureSimulation19.99 USDSingle-playerSimilar games →
  5. 5
    Saleblazers — Steam game cover

    Saleblazers

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Indie with Project Cobalt.

    Fight. Sell. Survive. Live off the land, build your perfect shop, and defend against nightly horrors in this open world survival shop simulator for 1-8 players.

    2023ActionIndieAdventure29.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Whisper of the Swallows — Steam game cover

    Whisper of the Swallows

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Indie with Project Cobalt.

    Brave a savage, unforgiving procedurally generated world where extreme weather and the nightmares of the dark will hunt you down. Alone or in co-op, survive, build, and explore to turn a cursed hellscape into your sanctuary of light.

    2026ActionIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    Urge — Steam game cover

    Urge

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Indie with Project Cobalt.

    Fight, build, explore, survive, while the dynamic player-caused hazardous fog is slowly changing the rules of the world around you.

    2021ActionIndieAdventure15.29 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Nowhere: Mysterious Artifacts — Steam game cover

    Nowhere: Mysterious Artifacts

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Indie with Project Cobalt.

    Nowhere: Mysterious Artifacts is a Multiplayer Survival Horror game for up to 4 players. Set in the Middle of the Unknown, you can craft, build, explore and discover secrets in the exciting first chapter from EFNSOFT.

    2023ActionIndieAdventureFreeDeck PlayableSingle-playerSimilar games →
  9. 9
    Ground Parkour : First Mission — Steam game cover

    Ground Parkour : First Mission

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Strategy with Project Cobalt.

    Ground parkour: First Mission, in short, you compete with yourself to reach the highest point on the track with different characters and different abilities in a construction site in the city. Each character has different abilities and you progress on this track full of obstacles. Enjoy!

    2023ActionStrategyAdventure4.99 USDSingle-playerSimilar games →
  10. 10
    Don't Leave — Steam game cover

    Don't Leave

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Strategy with Project Cobalt.

    Welcome to a mysterious adventure where justice and the supernatural intertwine! Judge Harlan, in his old country cottage, faces a mysterious presence after his mother's sudden departure. Explore justice's limits in this extraordinary tale!

    2023ActionStrategyIndie6.99 USDSingle-playerSimilar games →
  11. 11
    Sinister Hospital — Steam game cover

    Sinister Hospital

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Strategy with Project Cobalt.

    In the dark forests of Duskwood town, an abandoned hospital rises ominously. Despite its closure years ago, "Sinister Hospital" harbors terrifying secrets. The player enters to follow the trail of a group of lost children from the town. There lies a dark journey and quest for justice: Judge Harlan.

    2024ActionStrategyIndie7.99 USDSingle-playerSimilar games →
  12. 12
    Satan Moans — Steam game cover

    Satan Moans

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Strategy with Project Cobalt.

    Are you ready for an adrenaline-fueled adventure with "Satan Moans"? In this horror-packed game, you'll explore the supernatural events surrounding a teenager returning home in the dead of night. Are you ready to dive into a suspenseful universe?

    2024ActionStrategyIndie5.99 USDSingle-playerSimilar games →
  13. 13
    Grouls — Steam game cover

    Grouls

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Strategy with Project Cobalt.

    Uncover the chilling secrets of an abandoned house as Denis. Collect body parts, solve puzzles, and escape terrifying entities. Your choices shape your fate. Can you survive the nightmare?

    2024ActionStrategyIndie3.99 USDSingle-playerSimilar games →
  14. 14
    Night Market Simulator — Steam game cover

    Night Market Simulator

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Strategy and Indie with Project Cobalt.

    Start your market from scratch, choose and price your own products. Every sale leads to new licenses, bigger spaces, and exciting new opportunities. Take full control of your warehouse layout, manage your staff wisely, and lay the foundation for your very own market empire!

    2025StrategyIndieSimulation11.99 USDSingle-playerSimilar games →
  15. 15
    Submeris — Steam game cover

    Submeris

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Action and Strategy with Project Cobalt.

    Submeris is an underwater mining adventure set beneath a mysterious island. Dig, upgrade your gear, survive dangerous depths, and uncover the legendary treasure hidden far below the ocean floor!

    2025ActionStrategyIndie4.99 USDSingle-playerSimilar games →
  16. 16
    Sweet Toys Simulator — Steam game cover

    Sweet Toys Simulator

    Single-player alternative to Project Cobalt — playable solo, no multiplayer required. Shares Strategy and Indie with Project Cobalt.

    Start your sweet store from scratch!. Pick and price your own toys and candies. Unlock new licenses with every sale, expand your shop, hire staff, and build the most colorful toy & candy empire ever! Manage shelves, set prices, and make your customers smile! 🧸🍭🎉

    2025StrategyIndieSimulation9.99 USDSingle-playerSimilar games →