IMHO.

Single-player games like Insect Swarm

Below are 11 single-player Steam games similar to Insect Swarm, 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 Insect Swarm page.

Ranked picks

  1. 1
    Oh! Robot: Legendary Mechanic — Steam game cover

    Oh! Robot: Legendary Mechanic

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

    Oh! Robot is a top-down shooting game featuring the catchphrase 'NEVER GIVE UP! NEVER SURRENDER!' It follows the journey of a brave young girl who pilots a robot named ZeroBot to save the world from rampaging machines driven mad by a rogue AI. Engine start let’s go!

    ActionIndieAdventureSingle-playerSimilar games →
  2. 2
    MECHIEVAL — Steam game cover

    MECHIEVAL

    Single-player alternative to Insect Swarm — playable solo, no multiplayer required. Shares Action and Adventure with Insect Swarm.

    The twilight of the plague-ravaged Middle Ages. Pilot a five-story-high mech, unleashing torrents of ammunition, dancing with magic, and hunting the demons spreading pestilence in this frenzied top-down shooter.

    ActionAdventureRPGSingle-playerSimilar games →
  3. 3
    Beyond Horizon — Steam game cover

    Beyond Horizon

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

    Battle across the galaxy, defeat powerful bosses, and uncover the mystery of Kuma's missing sister in this fast-paced top-down space shooter.

    2026ActionIndieCasual3.49 USDSingle-playerSimilar games →
  4. 4
    TouHou Koishi's Enchanted Woods — Steam game cover

    TouHou Koishi's Enchanted Woods

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

    「TouHou Koishi's Enchanted Woods」 is a Touhou fangame.This is a "reverse-construction" action rogue-lite.Koishi vs. Kokoro! But as the playable character, Koishi uses various enhancement cards to continuously strengthen Kokoro. Can she ultimately defeat the Kokoro she has built up herself?

    2026ActionIndieAdventureSingle-playerSimilar games →
  5. 5
    Forces of Ether — Steam game cover

    Forces of Ether

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

    Blast your way through an Isometric Open World Galaxy. Fly seamlessly to space. Lead your chosen faction in ground and space battles. Stop the imminent Collapse of civilization... Or let it all fall into ruin.

    2024ActionIndieAdventure6.99 USDSingle-playerSimilar games →
  6. 6
    Memory Lost — Steam game cover

    Memory Lost

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

    Memory Lost is a story-driven fast-paced cyberpunk shooter where you are not just fighting enemies — you become them. Possess enemies, adapt their weapons and skills, and fight ruthless corporations. Uncover secrets, upgrade abilities, and shape your own fate in this world.

    2025ActionIndieAdventure19.99 USDDeck VerifiedSingle-playerSimilar games →
  7. 7
    Final Shot — Steam game cover

    Final Shot

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

    When the only way is revenge! Test yourself in adrenaline-pumping top-down action and prove that you are ready to go all the way to the end - to the final shot!

    2025ActionIndie6.99 USDSingle-playerSimilar games →
  8. 8
    God's Trigger — Steam game cover

    God's Trigger

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

    Slay enemies with speed and precision in an over-the-top show of blood and explosions. Play solo or with others, make split-second decisions, dodge bullets, and use weapons and abilities to inflict violence in the most graphic way possible.

    2019ActionIndie14.99 USDDeck VerifiedSingle-playerSimilar games →
  9. 9
    SC2VN - The eSports Visual Novel — Steam game cover

    SC2VN - The eSports Visual Novel

    Single-player alternative to Insect Swarm — playable solo, no multiplayer required. Shares Indie and Adventure with Insect Swarm.

    SC2VN is a visual novel about the South Korean StarCraft 2 scene. You play as Mach, a foreign semi-pro trying to make it in eSports who soon learns that success in StarCraft takes more than in-game strategy.

    2015IndieAdventureSimulationFreeDeck PlayableSingle-playerSimilar games →
  10. 10
    Vampire Survivors — Steam game cover

    Vampire Survivors

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

    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 →
  11. 11
    Loot Tycoon — Steam game cover

    Loot Tycoon

    Single-player alternative to Insect Swarm — playable solo, no multiplayer required. Shares Indie and Adventure with Insect Swarm.

    You are not the Hero—you are the Merchant who bleeds them dry! Dive into a unique mix of Hack & Slash and Shop Simulation. Farm dungeons with fully automated combat, loot legendary artifacts, and crash the market. Build your shop from a dirty rug to a medieval monopoly.

    2026IndieAdventureCasual6.99 USDDeck PlayableSingle-playerSimilar games →