IMHO.

Single-player games like Defend Earth: Xenos Survivors - Prelude

Below are 15 single-player Steam games similar to Defend Earth: Xenos Survivors - Prelude, 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 Defend Earth: Xenos Survivors - Prelude page.

Ranked picks

  1. 1
    Lunaris — Steam game cover

    Lunaris

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    Lunaris is a fast-paced sci-fi top-down roguelite shooter: survive escalating enemy waves, stack powerful passive and active abilities, craft wild build synergies, and turn the arena into a neon storm of lasers and explosions. Every run feels fresh and intense.

    2026ActionIndie0.99 USDSingle-playerSimilar games →
  2. 2
    PengPong — Steam game cover

    PengPong

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    PengPong is a bullet-hell roguelike where pinball meets gambling. Bounce your way through chaos and bet it all to survive.

    2026ActionIndieCasualSingle-playerSimilar games →
  3. 3
    Requiem For a Lost World — Steam game cover

    Requiem For a Lost World

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    A survival roguelike where your weapons fight for you. Survive 30 minutes against endless enemy waves by crafting builds from weapons, items, and elemental reactions. Play solo or with up to 8 players. Every run is an opportunity, every decision is crucial.

    2024ActionIndieRPGFreeSingle-playerSimilar games →
  4. 4
    Asterogue — Steam game cover

    Asterogue

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    A roguelite space shooter based around the classic arcade game. Shoot asteroids, ships, and take down the mothership in a multi-stage boss fight, avoiding lasers and explosions. Upgrade your ship during and after your run in this casual simple roguelite.

    ActionIndieCasualSingle-playerSimilar games →
  5. 5
    Boom Die Repeat — Steam game cover

    Boom Die Repeat

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    Blast zombies & mutants in this fast-paced post-apocalyptic top-down roguelite! Battle through randomized biomes, swap out unique weapons, equip insane loadouts, and mutate yourself stronger with collected DNA. Die, unlock permanent perks, and dive back into another brutal run!

    2026ActionIndieCasualSingle-playerSimilar games →
  6. 6
    Battle Nap — Steam game cover

    Battle Nap

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    Battle Nap is a roguelite top-down shooter where your picnic nap becomes an explosive journey into dreamland domination. Build your arsenal, stack your perks, and blast through your subconscious to ensure you don’t wake up until the job is done. Don't wake up - the fight is just getting good!

    ActionIndieSingle-playerSimilar games →
  7. 7
    Deep Space Survivor: Endless Starfield — Steam game cover

    Deep Space Survivor: Endless Starfield

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    "Deep Space Survivor: Endless Starfield" is a survivor-style game. Your interstellar battleship accidentally enters an unknown universe, fighting its way through endless enemies, roaming multiple star systems, and collecting meteor resources to forge your ultimate orbital weapon.

    ActionIndieCasualSingle-playerSimilar games →
  8. 8
    No Sweet Looks — Steam game cover

    No Sweet Looks

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    Nothing but ocean in every direction, and monsters eyeing you down everywhere you go! Wake up, confront the monsters, and find your way home in this top down rouge-like, with a unique take on shooting mechanics. 

    2025ActionIndie2.99 USDSingle-playerSimilar games →
  9. 9
    Defend Earth: Xenos Survivors — Steam game cover

    Defend Earth: Xenos Survivors

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    You are Earth's last line of defense in a relentless alien invasion. Experience intense top-down roguelite action across diverse landscapes, fighting invaders with a versatile arsenal. Outsmart, outgun, and survive your foes. Every run increases the challenge - so adapt, evolve, dominate!

    2023ActionIndieAdventure4.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Shell Runner - Prelude — Steam game cover

    Shell Runner - Prelude

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    Shell Runner - Prelude is a PvE Extraction Top-Down Looter-Shooter set in a cyberpunk dystopian future. As a mercenary your objective is as clear as it's dangerous: infiltrate, assassinate, loot, and extract without dying. Or fail, and lose everything.

    2023ActionIndieDeck PlayableSingle-playerSimilar games →
  11. 11
    Shell Runner — Steam game cover

    Shell Runner

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    2045. Life's never been cheaper. Shells mean you can come back if you have money. You used to. Now you're on the bottom in a cyberpunk sprawl. Claw your way back up through wet work as a Shell Runner, in a PvE extraction looter shooter, where a gig can make you rich - or broke.

    2025ActionIndie14.99 USDDeck PlayableSingle-playerSimilar games →
  12. 12
    Pantheion — Steam game cover

    Pantheion

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Indie and Casual with Defend Earth: Xenos Survivors - Prelude.

    A single-player deck-building card game where mythologies unite. Construct your deck with deities, followers, artifacts, and blessings from Greek, Norse, and Japanese legends. Overcome each site's threshold through clever strategy, powerful combos, and unique card synergies.

    2025StrategyIndieCasual3.49 USDSingle-playerSimilar games →
  13. 13
    A Game of D.I.C.E. — Steam game cover

    A Game of D.I.C.E.

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Indie and Casual with Defend Earth: Xenos Survivors - Prelude.

    A tense dice duel in an elegant Art Deco world where luck and strategy decide who survives. Roll five dice and build winning hands inspired by poker. Use Gambits to flip the table in your favor. Outlast your rival: only one remains seated at the dinner table.

    2026StrategyIndieCasual1.79 USDSingle-playerSimilar games →
  14. 14
    Memoria Arcana — Steam game cover

    Memoria Arcana

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Indie and Casual with Defend Earth: Xenos Survivors - Prelude.

    Memoria Arcana is a single-player card game with traditional memory mechanics: Reveal as many pairs as you can to form poker-inspired hands, earn points, and overcome the Curse stages. Master the Arcana and Zodiac cards to increase your chance of winning.

    2026StrategyIndieCasual4.99 USDDeck PlayableSingle-playerSimilar games →
  15. 15
    Hellwake: Hordes of Styx — Steam game cover

    Hellwake: Hordes of Styx

    Single-player alternative to Defend Earth: Xenos Survivors - Prelude — playable solo, no multiplayer required. Shares Action and Indie with Defend Earth: Xenos Survivors - Prelude.

    In a dimension full of demons, master movement and carve through enemies with your sword and devastating magic. Forge rune-powered builds to survive the endless onslaught.

    2026ActionIndieCasualSingle-playerSimilar games →