IMHO.

Single-player games like Let Them Come: Onslaught

Below are 16 single-player Steam games similar to Let Them Come: Onslaught, 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 Let Them Come: Onslaught page.

Ranked picks

  1. 1
    Micron Survivor — Steam game cover

    Micron Survivor

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Micron Survivor is a survival game with rogue-lite elements where you play as alien microorganisms under the microscope. Evolve, unlock research objectives, find symbiotic weapons, upgrade your builds, and fight hordes of terrestrial organisms to rule the microcosm.

    ActionRPGCasualSingle-playerSimilar games →
  2. 2
    Nano Squadron — Steam game cover

    Nano Squadron

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Manage your shields, evolve your ship, defend Earth. Nano Squadron is a top-down space roguelite where every run brings new upgrades and every mistake leaves you exposed.

    2026ActionIndie4.79 USDSingle-playerSimilar games →
  3. 3
    Orbit Run — Steam game cover

    Orbit Run

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Orbit Run is an arcade sci-fi game with roguelike elements, in which orbiting asteroids are your only weapons. Catch asteroids and combine them to unlock their run-altering abilities. Skillfully manoeuvre to dodge attacks and land massive asteroid strikes to defeat the ever-increasing waves of foes.

    2027ActionIndieSingle-playerSimilar games →
  4. 4
    Hover Point — Steam game cover

    Hover Point

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Hover Point is a physics-based rogue-lite bullet hell where movement is your weapon. Dodge chaotic swarms with auto-fire action, build your skill tree, and climb global leaderboards. Master the chaos solo or in co-op via mouse-only, keyboard-only, or controller-only playstyles.

    2026ActionIndieCasual4.99 USDSingle-playerSimilar games →
  5. 5
    Irradiant Skies — Steam game cover

    Irradiant Skies

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Irradiant Skies is an arcade roguelite blending brick-breaking and bullet-parrying combat. Reflect enemy attacks, chain powerful upgrades, and master unique ships as you ascend through waves of enemies.

    2026ActionIndieCasualSingle-playerSimilar games →
  6. 6
    Rogue Shapes — Steam game cover

    Rogue Shapes

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Rogue Shapes is a fast-paced roguelike bullet hell where you battle waves of deadly shapes, level up, and choose powerful upgrades. Complete challenges to unlock new playable shapes, each with unique weapons. How long can you survive the chaos?

    2025ActionIndieCasual1.99 USDSingle-playerSimilar games →
  7. 7
    Galactagon — Steam game cover

    Galactagon

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Battle through endless cosmic hordes in a galaxy where your choices shape each run. Upgrade and collect a huge variety of weapons and upgrades to create unique builds. Customize the arena itself by adding new areas to it, each new area bringing it's own dangers and rewards.

    ActionSingle-playerSimilar games →
  8. 8
    Snapshot Survivor — Steam game cover

    Snapshot Survivor

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Snapshot Survivor is an action-focused take on Snapshot, inspired by games like Vampire Survivors with an extra dose of naughty story telling.  Roam around in an outskirt of Tokyo trying to survive taking upskirt pictures for profit to unlock new weapons and cutscenes!

    2026ActionSimulationSingle-playerSimilar games →
  9. 9
    Vampire Survivors — Steam game cover

    Vampire Survivors

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!

    2022ActionIndieRPG4.99 USDDeck VerifiedSingle-playerSimilar games →
  10. 10
    Megabonk — Steam game cover

    Megabonk

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Smash your way through endless waves of enemies and grow absurdly powerful! Grab loot, level up, unlock characters and upgrade to create unique and crazy builds as you fend off hordes of creatures!

    2025ActionIndieCasual9.99 USDDeck VerifiedSingle-playerSimilar games →
  11. 11
    Furi — Steam game cover

    Furi

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    The jailer is the key, kill him and you’ll be free. Fight your way free in this ultra-responsive, fast-paced sword-fighting and dual-stick shooting game.

    2016ActionIndie19.99 USDDeck VerifiedSingle-playerSimilar games →
  12. 12
    Risk of Rain (2013) — Steam game cover

    Risk of Rain (2013)

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Risk of Rain is an action platformer with roguelike elements. With permanent death as a primary feature, players will have to play their best to get as far as possible. Fight on a mysterious planet with randomly spawning enemies and bosses, either alone or with 3 friends in online co-op.

    2013ActionIndieRPG9.99 USDDeck PlayableSingle-playerSimilar games →
  13. 13
    Brotato — Steam game cover

    Brotato

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.

    2023ActionIndieRPG4.99 USDDeck VerifiedSingle-playerSimilar games →
  14. 14
    Risk of Rain 2 — Steam game cover

    Risk of Rain 2

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Escape a chaotic alien planet by fighting through hordes of frenzied monsters – with your friends, or on your own. Combine loot in surprising ways and master each character until you become the havoc you feared upon your first crash landing.

    2020ActionIndie24.99 USDDeck PlayableSingle-playerSimilar games →
  15. 15
    Resident Evil — Steam game cover

    Resident Evil

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    The game that defined the survival-horror genre is back! Check out the remastered HD version of Resident Evil.

    2015ActionAdventure19.99 USDDeck VerifiedSingle-playerSimilar games →
  16. 16
    Let Them Come — Steam game cover

    Let Them Come

    Single-player alternative to Let Them Come: Onslaught — playable solo, no multiplayer required. Shares Action with Let Them Come: Onslaught.

    Let Them Come is a fast paced pixel art shoot ‘em up. Twitchy trigger fingers and focused battle tactics are the order of the day as wave after wave of alien-like creatures try to take you down.

    2017ActionIndie1.59 USDDeck PlayableSingle-playerSimilar games →