IMHO.

Single-player games like Zomcats Invasion

Below are 9 single-player Steam games similar to Zomcats Invasion, 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 Zomcats Invasion page.

Ranked picks

  1. 1
    Duskvein Survivors - Bloodline — Steam game cover

    Duskvein Survivors - Bloodline

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

    Duskvein Survivors – Bloodline is a dark fantasy bullet-heaven roguelite where you fight through cursed arenas, harvest bloodline powers, and push deeper through portals into deadlier realms.

    2026ActionIndieAdventure5.99 USDSingle-playerSimilar games →
  2. 2
    Boomsday — Steam game cover

    Boomsday

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

    Hordes of adorable animals and toys have gone rogue and want you dead. Boomsday is a fast-paced top-down horde survival shooter. Mow down endless swarms, loot powerful weapons, stack game-breaking perks, and survive massive bosses every 10 waves. Solo or up to 8-player cross-play co-op & couch.

    ActionIndieSingle-playerSimilar games →
  3. 3
    Zombieville USA 3D — Steam game cover

    Zombieville USA 3D

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

    Zombieville USA 3D is a stylized arcade shooter combining retro gameplay with strikingly polished visuals. Fight through an endless undead horde in the bleak hellscape of suburbia! Choose your weapons, grab a friend, and see how long you can survive.

    2025ActionIndie9.99 USDDeck PlayableSingle-playerSimilar games →
  4. 4
    Hume Index — Steam game cover

    Hume Index

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

    As a special agent who specializes in dealing with unstable reality, you need to use your firearms, blades, and elemental reactions to eliminate mutants in an abandoned cosmo, control the source, and escape if possible. Can be played as a single player or with 2-4 players in Co-Op mode.

    2026ActionStrategyIndieSingle-playerSimilar games →
  5. 5
    The Whisker Watch — Steam game cover

    The Whisker Watch

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

    Paws up, Watchers! Team up as two house cats in a chaotic 2-player co-op action roguelite. Protect your Human after dark, upgrade your mansion by day, smash Void-born monsters, upgrade weapons and combat gadgets, grab the loot, and have fun making mischief.

    ActionIndieSingle-playerSimilar games →
  6. 6
    S-Ranker — Steam game cover

    S-Ranker

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

    Enter 5-minute dungeons, clear out monsters, choose your powers during battle, and rise from F-Rank to S-Rank in an action roguelite.

    2026ActionIndieRPGSingle-playerSimilar games →
  7. 7
    TactiCats — Steam game cover

    TactiCats

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

    Knock down your enemies and collect all the cats and achievements in this pixel art party game for true cat lovers. Use different power-ups and survive the dangerous traps to show your friends who's the fluffiest of them all!

    2025ActionIndieCasual5.99 USDSingle-playerSimilar games →
  8. 8
    Toadled: Eating Frenzy — Steam game cover

    Toadled: Eating Frenzy

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

    Toadled: Eating Frenzy is an action roguelike with an appetite! Play as a toad and eat everything on your path to grow bigger and mutate into new, disgusting forms. Consuming human flesh? Fair game. Police cars, tanks, missiles? Mild indigestion. Try out hundreds of appetizing build combinations!

    2026ActionIndieCasualSingle-playerSimilar games →
  9. 9
    Five Nights at Tinky's — Steam game cover

    Five Nights at Tinky's

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

    Five nights at Tinky's is a indie horror game, where you apply for a job as a nightguard at the "Tinkys Lasagne Place". You only need to work for 5 nights to receive your payment, but soon you will find out that you are not alone... Can you survive the 5 nights?

    2023ActionIndieAdventure1.99 USDSingle-playerSimilar games →