IMHO.

Single-player games like Project Bad Apple's AP400

Below are 8 single-player Steam games similar to Project Bad Apple's AP400, 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 Bad Apple's AP400 page.

Ranked picks

  1. 1
    HEADCUTTER — Steam game cover

    HEADCUTTER

    Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Adventure with Project Bad Apple's AP400.

    HEADCUTTER is a sci-fi spaghetti western FPS with brutal combat, destructible environments, and lots of gore. Track targets as a space bounty hunter, explore maps with multiple routes, and use the crunchy gunplay to cut their heads off so you can get your money!

    2027ActionAdventureSingle-playerSimilar games →
  2. 2
    Twisted Tower — Steam game cover

    Twisted Tower

    Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.

    Blast your way through an abandoned 1950s theme park crawling with fairy-tale mascots, twisted puzzles, and deadly traps. Uncover the dark secrets of your past as you race to the top to win back the love of your life.

    2026ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    RunFall — Steam game cover

    RunFall

    Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.

    First-Person Parkour game where you switch between worlds to navigate complex levels.

    ActionIndieAdventureSingle-playerSimilar games →
  4. 4
    Death Delivery — Steam game cover

    Death Delivery

    Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.

    Death Delivery is satisfying, fast-paced First Person Shooter with stylized slow motion,music, action and old-school trial-and-error difficulty.

    2024ActionIndieCasual4.99 USDSingle-playerSimilar games →
  5. 5
    Sinned Arena — Steam game cover

    Sinned Arena

    Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.

    Sinned Arena is a classic arena shooter inspired by timeless 90s games. You are trapped in Hell with other unfortunate souls, fighting among each other for demons twisted pleasures. Fight for your way out this dark place but beware, demons aren't there just to watch.

    2026ActionIndieSingle-playerSimilar games →
  6. 6
    Robabekya — Steam game cover

    Robabekya

    Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.

    You envision a futuristic open world where humans coexist with robots disguised in human-like skin. Powered by a dynamic, adaptive AI system, enemies learn from previous encounters, evolve their tactics, and grow more formidable with every battle.

    2025ActionIndieAdventure9.99 USDSingle-playerSimilar games →
  7. 7
    B.E.C.C.: Dead District — Steam game cover

    B.E.C.C.: Dead District

    Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.

    Defend against dynamic and intelligent monsters in the heart of the Dead District while unravelling the plot of a mysterious organization.

    ActionIndieAdventureSingle-playerSimilar games →
  8. 8
    HKO: Advanced Survival — Steam game cover

    HKO: Advanced Survival

    Single-player alternative to Project Bad Apple's AP400 — playable solo, no multiplayer required. Shares Action and Indie with Project Bad Apple's AP400.

    An open-world survival experience that combines exploration, suspense, resource management, tactical combat, and cooperative multiplayer. Explore dangerous islands, customize weapons, survive against the Penitents and escape with friends in The Phantom Runner experience.

    2026ActionIndieAdventureSingle-playerSimilar games →