IMHO.

Single-player games like MAR: Millions Are Rising

Below are 13 single-player Steam games similar to MAR: Millions Are Rising, 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 MAR: Millions Are Rising page.

Ranked picks

  1. 1
    Sir, We Have an Orc Problem — Steam game cover

    Sir, We Have an Orc Problem

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Strategy and Indie with MAR: Millions Are Rising.

    Sir, We Have an Orc Problem is an incremental-style tower defense game where you face an overwhelming number of orcs. Greet them with even more bullets, bombs and lasers!

    2026StrategyIndieSimulation9.99 USDDeck PlayableSingle-playerSimilar games →
  2. 2
    Attrition Line — Steam game cover

    Attrition Line

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Strategy and Indie with MAR: Millions Are Rising.

    A factory game about building an army. Mine, smelt, and manufacture soldiers on an assembly line, then send them to fight a swarm that grows every hour. The more you automate, the bigger your army. Fall behind and the line breaks.

    2027StrategyIndieSimulationSingle-playerSimilar games →
  3. 3
    Endless Escalation — Steam game cover

    Endless Escalation

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Action and Strategy with MAR: Millions Are Rising.

    A strategy-driven incremental where choices actually matter. Upgrade costs scale together, forcing meaningful trade-offs instead of blindly upgrading everything. Build defenses, specialize your army, and adapt to overcome ever-evolving enemy forces.

    ActionStrategyIndieSingle-playerSimilar games →
  4. 4
    Bugs. Billions of Bugs. — Steam game cover

    Bugs. Billions of Bugs.

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Action and Strategy with MAR: Millions Are Rising.

    An incremental swarm tower defense. Play solo or 2–4 player Steam co-op. Defend a doomed mining colony through a full campaign, infinite procedural maps and Workshop creations. Build towers. Call orbital strikes. Kill billions. The only good bug is a dead bug. Do your part!

    2026ActionStrategyIndie1.79 USDSingle-playerSimilar games →
  5. 5
    OUTWORKS — Steam game cover

    OUTWORKS

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Strategy and Indie with MAR: Millions Are Rising.

    Build a towering 3D fortress and hold the line. Stack floors, raise walls, and place turrets by altitude to survive escalating swarms of ground and flying machines closing on your core — then watch one collapsing tower take everything with it. A lean, neon, code-built base-defense roguelite.

    2026StrategyIndieSimulation4.24 USDSingle-playerSimilar games →
  6. 6
    Swarm Idle — Steam game cover

    Swarm Idle

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Strategy and Indie with MAR: Millions Are Rising.

    Swarm Idle is a prestige idle/incremental game where you command an alien queen and her swarm: devour 100 cities, develop eight lineages, optimize your Mutations, and progress even while offline until the whole Earth is ravaged.

    2026StrategyIndieSimulationSingle-playerSimilar games →
  7. 7
    BATTLE: PARTS & POWER — Steam game cover

    BATTLE: PARTS & POWER

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Strategy and Indie with MAR: Millions Are Rising.

    Design robot blueprints, equip new parts, and run automated factories in a 2D idle auto battler. Build and upgrade production lines during battle, defend your headquarters, and refine each loadout to overcome escalating enemy waves.

    StrategyIndieSimulationSingle-playerSimilar games →
  8. 8
    Endless Void: Idle Tower Defence — Steam game cover

    Endless Void: Idle Tower Defence

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Action and Strategy with MAR: Millions Are Rising.

    Shoot. Upgrade. Die. Repeat. Defend against endless swarms in this minimalist idle tower defense. Construct an impenetrable fortress, research game-breaking tech, craft legendary gear, and harness cosmic abilities like Black Holes and Orbital Strikes. How deep into the Void can you survive?

    2026ActionStrategyIndieSingle-playerSimilar games →
  9. 9
    Maktala: Slime Lootfest — Steam game cover

    Maktala: Slime Lootfest

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Action and Strategy with MAR: Millions Are Rising.

    An incremental game where you kill hordes of slimes and use their loot to become stronger and farm them. Collect powerful loot, master skills, and uncover tons of content.

    2025ActionStrategyIndie4.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Samawa Idle — Steam game cover

    Samawa Idle

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Action and Strategy with MAR: Millions Are Rising.

    Unleash the power of specialized towers to annihilate hordes of monsters in this idle game with roguelike elements. Collect gold, level up your towers, face powerful bosses, and refine your strategy with an evolving skill tree.

    2023ActionStrategyIndie4.99 USDDeck PlayableSingle-playerSimilar games →
  11. 11
    Desktop Nard: Dice Idle — Steam game cover

    Desktop Nard: Dice Idle

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Action and Strategy with MAR: Millions Are Rising.

    Idle Dice roll automatically for you, unleashing skills and farming rare loot in the corner of your desktop, with tons of content and loot types.

    2026ActionStrategyIndie4.49 USDDeck PlayableSingle-playerSimilar games →
  12. 12
    Zad Archery — Steam game cover

    Zad Archery

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Action and Strategy with MAR: Millions Are Rising.

    Shoot down waves of targets, collect their loot, and grow stronger through upgrades and skills in this expanding incremental game.

    2026ActionStrategyIndie6.29 USDDeck PlayableSingle-playerSimilar games →
  13. 13
    Aleef: Desktop Pet Collector — Steam game cover

    Aleef: Desktop Pet Collector

    Single-player alternative to MAR: Millions Are Rising — playable solo, no multiplayer required. Shares Strategy and Indie with MAR: Millions Are Rising.

    Work, browse, or play other games while hatching eggs in the background! Collect 300+ pets, unlock powerful upgrades, and build your battle team. Or Sell/Buy from the Steam Community Market.

    2026StrategyIndieRPGSingle-playerSimilar games →