IMHO.

Single-player games like Annihilation

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

Ranked picks

  1. 1
    Cosmic Run — Steam game cover

    Cosmic Run

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

    Cosmic Run is a single-player space roguelite where you battle relentless galactic enemies, strategically upgrade your ship, and help the Zogark family survive their journey across the galaxy. Build powerful combinations, adapt to chaotic encounters, and escape one broken system after another.

    2026ActionStrategyIndie9.89 USDSingle-playerSimilar games →
  2. 2
    Viscera — Steam game cover

    Viscera

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

    Viscera is an arcade-inspired, gleefully excessive top-down shooter. Fight through the muck and gore against the mutant menace. Master over 50 weapons and more than 80 abilities. Prove you’re the best at withstanding the horde until the end takes you. Viscera awaits. Soak in it.

    2024ActionIndie19.99 USDSingle-playerSimilar games →
  3. 3
    Void Resurgence — Steam game cover

    Void Resurgence

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

    Command a starship in Void Resurgence, a retro-futuristic space roguelite. Battle through colorful cosmic fields, collect upgrades, and build your ultimate ship. Dodge intense bullet-hell patterns and fight for survival. Every run offers new challenges and permanent progress.

    2025ActionIndieCasual4.99 USDSingle-playerSimilar games →
  4. 4
    Crystal Survivor — Steam game cover

    Crystal Survivor

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

    Defeat your enemies with super powerful charged shots! "Crystal Survivor" is a top-down roguelite arena shooter. Use the crystal's unique attack methods, various weapons, items, and relics to survive.

    2024ActionIndieRPG3.99 USDSingle-playerSimilar games →
  5. 5
    Core Breach — Steam game cover

    Core Breach

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

    Core Breach is a fast-paced, twin-stick arcade shooter in a pixel art style. Play as a Trojan worm virus, outmaneuvering and destroying antivirus enemies. Upgrade your worm with powerful attacks and skills as you fight to breach the CPU core and uncover its secrets

    ActionIndieCasualSingle-playerSimilar games →
  6. 6
    Penguin Weapons — Steam game cover

    Penguin Weapons

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

    Penguin Weapons is a dynamic action roguelite about penguins that collect artifacts, creating absurdly crazy weapons, fight monsters and bosses, unlock stylish clothes, and explore increasingly difficult worlds full of unique combinations and unpredictability alone or with friends.

    2026ActionRPGSingle-playerSimilar games →
  7. 7
    Ground Zero Hero — Steam game cover

    Ground Zero Hero

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

    Kill mutants. Absorb their remains. Mutate into something stronger every run. Stack insane power combos and survive overwhelming hordes in this fast, chaotic, highly replayable action roguelite bullet hell.

    2026ActionAdventureFree To PlaySingle-playerSimilar games →
  8. 8
    Ark Odyssey — Steam game cover

    Ark Odyssey

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

    Ark Odyssey is a top-down arcade shooter that lets you command an army of starships to fight against the force of void! Gather your fleet into formations, and build your team of evolving synergistic compositions. Order your army of Starforce through space and protect the cosmos!

    2026ActionStrategyIndieSingle-playerSimilar games →