IMHO.

Single-player games like Marcux: Medieval Alien Invasion

Below are 8 single-player Steam games similar to Marcux: Medieval Alien 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 Marcux: Medieval Alien Invasion page.

Ranked picks

  1. 1
    Cube Guy — Steam game cover

    Cube Guy

    Single-player alternative to Marcux: Medieval Alien Invasion — playable solo, no multiplayer required. Shares Action and Indie with Marcux: Medieval Alien Invasion.

    Cube Guy is a 2.5D platformer with simple yet fun dodging, turn based boss battles, secrets, and a lot more!

    ActionIndieAdventureSingle-playerSimilar games →
  2. 2
    UnPerfect World — Steam game cover

    UnPerfect World

    Single-player alternative to Marcux: Medieval Alien Invasion — playable solo, no multiplayer required. Shares Action and Indie with Marcux: Medieval Alien Invasion.

    What starts as a battle against a minor evil may ultimately lead to saving the whole world

    ActionIndieAdventureSingle-playerSimilar games →
  3. 3
    Breakrooms — Steam game cover

    Breakrooms

    Single-player alternative to Marcux: Medieval Alien Invasion — playable solo, no multiplayer required. Shares Indie and Adventure with Marcux: Medieval Alien Invasion.

    You wake in the seams of a world that shouldn't exist. Breakrooms is a sci-fi horror adventure set in an alternate dimension that will make you question your own reality.

    2026IndieAdventureSingle-playerSimilar games →
  4. 4
    The Journey Home — Steam game cover

    The Journey Home

    Single-player alternative to Marcux: Medieval Alien Invasion — playable solo, no multiplayer required. Shares Indie and Adventure with Marcux: Medieval Alien Invasion.

    Some answers can only be found by going within. In a world beyond the boundaries of time and space, your journey awaits. A stress-free atmospheric side-scrolling adventure.

    2026IndieAdventureSingle-playerSimilar games →
  5. 5
    Carbon Rain — Steam game cover

    Carbon Rain

    Single-player alternative to Marcux: Medieval Alien Invasion — playable solo, no multiplayer required. Shares Action and Indie with Marcux: Medieval Alien Invasion.

    Explore a beautiful yet hostile post-apocalyptic world in this pixel-art action-adventure. Leave your bunker, battle mutated creatures, gather resources, upgrade your gear, and push deeper into dangerous new biomes.

    2027ActionIndieSingle-playerSimilar games →
  6. 6
    SPHEROCIOUS — Steam game cover

    SPHEROCIOUS

    Single-player alternative to Marcux: Medieval Alien Invasion — playable solo, no multiplayer required. Shares Action and Adventure with Marcux: Medieval Alien Invasion.

    Play a mutant sloth fighting to reclaim the rainforest in this atmospheric 2.5D puzzle platformer. Roll, bounce, and climb through the uncharted Amazon jungle as you drive out a greedy corporate logging operation!

    ActionAdventureSingle-playerSimilar games →
  7. 7
    El Borracho — Steam game cover

    El Borracho

    Single-player alternative to Marcux: Medieval Alien Invasion — playable solo, no multiplayer required. Shares Action and Indie with Marcux: Medieval Alien Invasion.

    Fight! Complete levels! Advance the story! Tequila. Revolver. Machete. That's all you need. Reach the end. Save your village from bandits! A fun 2D shooter-platformer in the shoot 'em up genre.

    ActionIndieAdventureSingle-playerSimilar games →
  8. 8
    Phantom Beasts - Redemption — Steam game cover

    Phantom Beasts - Redemption

    Single-player alternative to Marcux: Medieval Alien Invasion — playable solo, no multiplayer required. Shares Action and Indie with Marcux: Medieval Alien Invasion.

    Phantom Beasts - Redemption is a free to play cyberpunk 2.5D shooter that has the appealing blend of story, special ability system, and an explosive, gore-filled combat.

    2027ActionIndieAdventureFreeSingle-playerSimilar games →