IMHO.

Single-player games like Monsteria

Below are 10 single-player Steam games similar to Monsteria, 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 Monsteria page.

Ranked picks

  1. 1
    Mercenary Battle Company: The Reapers — Steam game cover

    Mercenary Battle Company: The Reapers

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

    Join the race for Ether! Mercenary Battle Company: The Reapers is a fast-paced, roguelite, bullet heaven game in a sci-fi setting. Choose your pilots, customize and upgrade your Mecha Robots, and survive against endless swarms of Xeni. Will you survive long enough?

    2024ActionIndieCasual4.99 USDSingle-playerSimilar games →
  2. 2
    PlatinumS — Steam game cover

    PlatinumS

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

    PlatinumS is a roguelite top-down arena shooter that brings the ultimate hero's party-building experience to life, empowering heroes to conquer dungeons. Players have the option to select from a range of items and buffs to craft their own distinctive builds.

    2024ActionIndieRPG3.99 USDSingle-playerSimilar games →
  3. 3
    BloodDome99 — Steam game cover

    BloodDome99

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

    BloodDome99 is a game about nostalgia, capitalism, violence, and over-the-top absurdist fun. 80s arcade meets modern horde-survival roguelike. Create unique builds, master more than 40 weapons, and kill ever-growing hordes of contestants in the retro-futuristic gladiator gameshow BLOODDOME99

    2024ActionIndieCasual4.99 USDDeck VerifiedSingle-playerSimilar games →
  4. 4
    Army of Ruin — Steam game cover

    Army of Ruin

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

    Wreak havoc on countless foes with mighty weapons and deadly spells! Enhance your skills and face even greater dangers! Army of Ruin is an auto-shooter where you become the Bullet Hell.

    2023ActionIndieCasual7.99 USDDeck VerifiedSingle-playerSimilar games →
  5. 5
    NIMRODS — Steam game cover

    NIMRODS

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

    Assemble a limitless arsenal in this survive-em-up roguelite shooter. As a Gun Manufacturer's testing force, your mission is simple: test the latest gun tech and scavenge alien planets. Collect insane weapon parts to invent crazy guns that slay thousands. You may not survive, but your guns will!

    2024ActionIndieAdventure9.99 USDDeck VerifiedSingle-playerSimilar games →
  6. 6
    Larva Mortus — Steam game cover

    Larva Mortus

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

    Larva Mortus is a fast-paced hack and slash top-down shooter. As an agent specializing in exorcism, you are tasked to hunt monsters of the supernatural in a dark, ominous, and randomly generated atmosphere full of undead, terrifying and demonic nightmares.

    2009ActionIndie4.99 USDSingle-playerSimilar games →
  7. 7
    Woodpunk — Steam game cover

    Woodpunk

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

    Woodpunk is an exhilarating roguelike bullet hell retro pixel art shooter in a medieval Woodpunk universe, where the primary energy resource is WOOD.

    2018ActionIndie14.99 USDDeck PlayableSingle-playerSimilar games →
  8. 8
    Angelstruck — Steam game cover

    Angelstruck

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

    Angelstruck is a 2D roguelite shooter where you demolish the forces of Heaven as you attempt to reach the pearly gates. Overcharge your holy rifle, and min-max your way into insane game-breaking builds. Unlock permanent capabilities and powerful screen-destroying weapons that feed on kills.

    2024ActionIndie5.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    Acid Clashers — Steam game cover

    Acid Clashers

    Single-player alternative to Monsteria — playable solo, no multiplayer required.

    Acid Clashers is a single-player turn-based Autobattler game with a strong focus on incrementing stats.

    2026StrategySingle-playerSimilar games →
  10. 10
    MineCash — Steam game cover

    MineCash

    Single-player alternative to Monsteria — playable solo, no multiplayer required. Shares Casual with Monsteria.

    MineCash is a simple incremental game about mining cash.

    CasualSingle-playerSimilar games →