IMHO.

Single-player games like Project Boost

Below are 8 single-player Steam games similar to Project Boost, 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 Boost page.

Ranked picks

  1. 1
    Mandir: Gods Untouched — Steam game cover

    Mandir: Gods Untouched

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

    A third-person horror shooter game set in a remote mountain temple, where you play as an Inspector investigating a lost excavation team, uncovering a hidden conspiracy, brutal rituals, and a supernatural force buried beneath ancient structures.

    2026ActionIndieAdventureFreeSingle-playerSimilar games →
  2. 2
    Bug Down — Steam game cover

    Bug Down

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

    Take flight as a fierce wasp and tear through giant household rooms - dodging hazards, blasting bugs, and tackling shifting objectives across every room in the house.

    ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    NO RELOADING: Survival Trials — Steam game cover

    NO RELOADING: Survival Trials

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

    NO RELOADING is a stunt-driven action game where your tractor beam powers let you weaponize everything, including yourself. Master bullet-time acrobatics, chain deadly combos, and invent synergistic upgrades. You'll need every stylish trick to rescue your best doggo from sinister goblins.

    2024ActionIndieEarly Access14.99 USDSingle-playerSimilar games →
  4. 4
    G.I. Joe: Operation Blackout — Steam game cover

    G.I. Joe: Operation Blackout

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

    G.I. Joe and Cobra are back! G.I. Joe: Operation Blackout is a classic team-based third-person shooter where you play as your favorite characters from Team G.I. Joe and Team Cobra.

    2020ActionDeck VerifiedSingle-playerSimilar games →
  5. 5
    Gun Frog — Steam game cover

    Gun Frog

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

    Gun Frog is a unique physics-based movement shooter where you bounce on lily pads, kill flies and explore a vibrant world as a frog that ate a gun.

    2024Indie2.99 USDDeck PlayableSingle-playerSimilar games →
  6. 6
    Avium — Steam game cover

    Avium

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

    Avium is a sci-fi action-adventure RPG in a city ruled by those of great cybernetic wealth and influence, such as the Big Four. A Plutocracy, a "banana republic" that keeps its peace with the employment of Vigilantes like you, Diezel, a War-Suit donning, crime-fighting hero with a dark past.

    2024ActionIndieAdventure29.99 USDSingle-playerSimilar games →
  7. 7
    Vanquish — Steam game cover

    Vanquish

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

    PlatinumGames’ revolutionary sci-fi action shooter slide-boosts onto PC. Battle legions of future-tech enemies using a vast arsenal of weapons, including all DLC. Fully unlocked framerate and gorgeous HD resolutions up to 4K. The definitive way to play: war has accelerated.

    2017Action5.99 USDDeck VerifiedSingle-playerSimilar games →
  8. 8
    Devilated — Steam game cover

    Devilated

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

    Devilated is an ultraviolent RPG old-school shooter where you brutalize and cannibalize your demonic foes in equal measure. Eat their face before they eat yours.

    2024ActionIndieAdventure19.99 USDDeck PlayableSingle-playerSimilar games →