IMHO.

Single-player games like Horde Slayer

Below are 8 single-player Steam games similar to Horde Slayer, 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 Horde Slayer page.

Ranked picks

  1. 1
    Requiem For a Lost World — Steam game cover

    Requiem For a Lost World

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

    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 →
  2. 2
    Realmlords — Steam game cover

    Realmlords

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

    REALMLORDS is a fast‑paced Bullet‑hell / Spell-hell roguelite with 12 distinct classes, each offering unique weapons, abilities, and build paths. Explore 9 dangerous Randomly Generated Elemental Realms filled with unique monsters, hazards, and loot as you fight to survive each run.

    2026ActionAdventureEarly Access3.74 USDSingle-playerSimilar games →
  3. 3
    Eternal League — Steam game cover

    Eternal League

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

    Step into a futuristic battleground where every decision shapes your destiny. In Eternal League, you'll embark on an epic journey through a fast-paced roguelike RPG that combines customization, strategic combat, and a unique session-based progression system that rewards your skill and creativity.

    2025ActionIndieRPG5.99 USDSingle-playerSimilar games →
  4. 4
    Army of Survivors — Steam game cover

    Army of Survivors

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

    Wage war against massive hordes of orcs, undead and demons in this survival roguelite. Upgrade and combine epic weapons and talents. Enlist an army to fight alongside you. Embrace the chaos of the battlefield!

    ActionIndieRPGSingle-playerSimilar games →
  5. 5
    Warriors of the End — Steam game cover

    Warriors of the End

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

    Warriors of the End is a fast-paced tower-defense horde-battler roguelike. Defend the Princess against enemy hordes by strategically positioning and upgrading your towers, customize unique characters with deadly weapons and spells, discover mindblowing synergies and create game-breaking builds!

    2026ActionIndieRPGSingle-playerSimilar games →
  6. 6
    Valkyrie Rising: Hordes of Ragnarök — Steam game cover

    Valkyrie Rising: Hordes of Ragnarök

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

    Carve through the Hordes of Ragnarök in a Bullet Heaven Roguelite inspired by Norse myth. Complete quests mid-run to earn divine blessings, wield the abilities of gods, and forge your path toward the build you want to play.

    2026ActionIndieRPGSingle-playerSimilar games →
  7. 7
    Whisperborn: Child of the Forest — Steam game cover

    Whisperborn: Child of the Forest

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

    Whipserborn is a dark 2D roguelike set in a living forest shaped by sorrow. Explore procedurally generated levels, craft powerful spell combos, upgrade a mysterious hub, and uncover your forgotten soul’s truth—alone or in seamless co-op.

    ActionIndieAdventureSingle-playerSimilar games →
  8. 8
    TouHou Koishi's Enchanted Woods — Steam game cover

    TouHou Koishi's Enchanted Woods

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

    「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 →