IMHO.

Single-player games like Beast Bastion

Below are 8 single-player Steam games similar to Beast Bastion, 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 Beast Bastion page.

Ranked picks

  1. 1
    Magua: Twenty Sorrows — Steam game cover

    Magua: Twenty Sorrows

    Single-player alternative to Beast Bastion — playable solo, no multiplayer required. Shares Strategy and Indie with Beast Bastion.

    An autobattler focused on the creating synergies to buff your team. Upgrade your units and defeat increasingly stronger enemies in this rogue-like game.

    2026StrategyIndieSingle-playerSimilar games →
  2. 2
    Death to Demons — Steam game cover

    Death to Demons

    Single-player alternative to Beast Bastion — playable solo, no multiplayer required. Shares Action and Strategy with Beast Bastion.

    You are a Necromancer, use your powers to raise the dead in this dark fantasy roguelite auto-battler. Build an undead army, evolve minions, choose powerful upgrades, and fight through waves of demons to break the gates of Hell and free the lands of Vaelthorron.

    2026ActionStrategyIndieSingle-playerSimilar games →
  3. 3
    Nocthra — Steam game cover

    Nocthra

    Single-player alternative to Beast Bastion — playable solo, no multiplayer required. Shares Strategy and Indie with Beast Bastion.

    Nocthra is a grim retro-style game where you play as a necromancer defending waves of attackers by raising hordes of minions from fallen enemies’ corpses. Protect your graveyard from relentless assaults, and dive into a perk system that offers endless skill combinations for infinite replayability.

    StrategyIndieAdventureSingle-playerSimilar games →
  4. 4
    Tower64 — Steam game cover

    Tower64

    Single-player alternative to Beast Bastion — playable solo, no multiplayer required. Shares Action and Strategy with Beast Bastion.

    Forge an evolving crystal tower, combine elemental attacks, and hold the center against relentless hordes in an old-school tower-survivor roguelite where every upgrade reshapes your build.

    2026ActionStrategyIndie6.29 USDSingle-playerSimilar games →
  5. 5
    Runecast — Steam game cover

    Runecast

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

    Pixel-art autobattler: the rune recruits, you command. Three matching runes summon a hero; merge three identical heroes to climb from level 1 to 3. Equip each with up to 3 finds and cross 4 acts of 10 waves.

    2026ActionIndieSingle-playerSimilar games →
  6. 6
    Witchtower: Spell Siege — Steam game cover

    Witchtower: Spell Siege

    Single-player alternative to Beast Bastion — playable solo, no multiplayer required. Shares Action and Strategy with Beast Bastion.

    Hand-aim artillery spells, blast a gothic horde into fully simulated pixel gore, and draft 200+ upgrade cards between waves to defend your witchtower. A fast 2D roguelite tower defense. Play solo or in local co-op.

    2026ActionStrategyIndie7.99 USDSingle-playerSimilar games →
  7. 7
    Withering Age — Steam game cover

    Withering Age

    Single-player alternative to Beast Bastion — playable solo, no multiplayer required. Shares Strategy and Indie with Beast Bastion.

    Withering Age is a real-time strategy roguelike set in a dark fantasy, medieval world brimming with magic, danger, and decay. Build and expand your kingdom, train loyal troops and mighty champions, and defend your lands against relentless hordes.

    2028StrategyIndieSimulationSingle-playerSimilar games →
  8. 8
    Pattern Survivors: Bullet Hell — Create Chaos — Steam game cover

    Pattern Survivors: Bullet Hell — Create Chaos

    Single-player alternative to Beast Bastion — playable solo, no multiplayer required. Shares Action and Strategy with Beast Bastion.

    “Pattern Survivors: Bullet Hell” — a dynamic roguelike where you design your own attack patterns and defend your tower against endless waves of enemies. Upgrade, modify, and adapt your strategy in real time — can you survive the chaos of patterns?

    2025ActionStrategyIndie0.74 USDSingle-playerSimilar games →