IMHO.

Single-player games like Deck Defense

Below are 9 single-player Steam games similar to Deck Defense, 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 Deck Defense page.

Ranked picks

  1. 1
    RealmGuard — Steam game cover

    RealmGuard

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

    Realmguard is a rogue-like tower defense where every run is a strategic balancing act of expansion and elemental strategy. Expand the map tile by tile, uncover random encounters and hidden rewards, upgrade weapons and combine elemental effects for powerful synergies to survive.

    2026StrategyIndieCasual8.99 USDSingle-playerSimilar games →
  2. 2
    Wandering Monolith: Rogue TD — Steam game cover

    Wandering Monolith: Rogue TD

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

    You are the Wandering Monolith, falling from the sky. Summon towers, expand the board, defend your core, and build your deck of upgrades to conquer countless worlds.

    StrategyIndieCasualSingle-playerSimilar games →
  3. 3
    Lucky Again — Steam game cover

    Lucky Again

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

    Face down swarms of enemies using cards with diverse abilities. Evolve your own unique deck to overcome the trials ahead, and become a quick-witted hero who can conquer any crisis. You will be joined by loyal companions OR charismatic fairies who aren't afraid to use you for their own ends.

    StrategyIndieSingle-playerSimilar games →
  4. 4
    Castella — Steam game cover

    Castella

    Single-player alternative to Deck Defense — playable solo, no multiplayer required. Shares Strategy and Casual with Deck Defense.

    Castella is a Tower Defense Rogue-like, where you will build a fortress to defend yourself from Hordes of monsters besieging your Castle. During the game you will unlock and upgrade a great variety of Towers and Buildings. You will build walls to block the path and defend your resources and Castle.

    2026ActionStrategyCasual11.19 USDSingle-playerSimilar games →
  5. 5
    Skyward Bastion — Steam game cover

    Skyward Bastion

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

    Skyward Bastion is a tower defense roguelite set on floating islands. Build and upgrade your defenses, survive endless waves of enemies, and explore procedurally expanding maps under a living day-night cycle.

    2026StrategyIndieEarly AccessSingle-playerSimilar games →
  6. 6
    Graphic Tower Defense — Steam game cover

    Graphic Tower Defense

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

    This is a minimalist-style tower defense game that is easy-going and relaxing, with a moderate level of difficulty. Build your tower formations to fend off enemies. It also supports online multiplayer, allowing you to team up and experience an unprecedented level of tower defense fun!

    2025StrategyIndieCasual3.99 USDDeck PlayableSingle-playerSimilar games →
  7. 7
    坍塌世界 — Steam game cover

    坍塌世界

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

    "Collapsing World" is an innovative tower defense game blending deck-building and roguelike mechanics. Recruit unique companions, craft powerful skill decks, and tackle randomized stages. Deep strategy breaks the traditional TD mold—every run is a fresh challenge!

    2026StrategyIndieSimulationFreeSingle-playerSimilar games →
  8. 8
    Rogue Cube Defense — Steam game cover

    Rogue Cube Defense

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

    Rogue Cube Defense is a minimalist roguelite tower defense game with procedurally generated path that you gradually build up. Each run is different as the upgrades you get from leveling up are random. Pick your towers loadout and come up with the best strategy to beat the hordes of enemies.

    StrategyIndieCasualSingle-playerSimilar games →
  9. 9
    Gooper — Steam game cover

    Gooper

    Single-player alternative to Deck Defense — playable solo, no multiplayer required. Shares Indie and Casual with Deck Defense.

    Gooper is a challenging 2D puzzle game. Work your way through 200 levels with escalating difficulty and mechanics.

    2024IndieCasual4.99 USDSingle-playerSimilar games →