IMHO.

Single-player games like Castle Defense Battles

Below are 16 single-player Steam games similar to Castle Defense Battles, 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 Castle Defense Battles page.

Ranked picks

  1. 1
    Runeomicon — Steam game cover

    Runeomicon

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Action and Strategy with Castle Defense Battles.

    Perform a dark ritual with your own hands under relentless pressure. Draw runes in real time, defend the ritual from enemies trying to stop it, and upgrade your skills to unleash devastating magic. Summon ancient eldritch gods in this dark fantasy game driven by skill, strategy and constant tension.

    2026ActionStrategyIndieSingle-playerSimilar games →
  2. 2
    GemCraft - Frostborn Wrath — Steam game cover

    GemCraft - Frostborn Wrath

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Action and Strategy with Castle Defense Battles.

    The epic tower defense dark fantasy journey continues! Create powerful gems with various abilities and take on the battle against an endlessly flowing army of monsters, and face the growing darkness as you fight your way back towards the Spiritforge.

    2020ActionStrategyIndie12.99 USDDeck PlayableSingle-playerSimilar games →
  3. 3
    1BIT CASTLE REMAKE — Steam game cover

    1BIT CASTLE REMAKE

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Action and Indie with Castle Defense Battles.

    Dive into 1BIT CASTLE: REMAKE, a strategic action-packed tower defense game. Choose heroes and perks to fight off evil monsters. Enjoy captivating pixel art while protecting your treasures in this addictive adventure with endless mode!

    2024ActionIndieAdventure3.99 USDSingle-playerSimilar games →
  4. 4
    Unholy Alliance - Tower Defense — Steam game cover

    Unholy Alliance - Tower Defense

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Action and Strategy with Castle Defense Battles.

    Enemies from this world and the dark one fight together in an “Unholy Alliance” to destroy your Extractors. Get ready to face and defeat enemy hordes using a vast arsenal of towers and special powers at your command in a unique tower defense game that will push your tactical skills to the limit!

    2021ActionStrategyIndie0.99 USDSingle-playerSimilar games →
  5. 5
    The Gate Must Stand — Steam game cover

    The Gate Must Stand

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Action and Strategy with Castle Defense Battles.

    Fend off brutal waves of demonic hordes in this epic fantasy tower defense survivors like! Hack and slash among the action or zoom to strategically control the battlefield. You are the city’s last line of defense, build your base, defend the gate!

    2026ActionStrategyIndieSingle-playerSimilar games →
  6. 6
    Spirits of the Hellements - TD — Steam game cover

    Spirits of the Hellements - TD

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Strategy with Castle Defense Battles.

    Assemble legendary Spirits and defend against the endless hordes of Hell. A tower defense where you must shape the battlefield and create a maze using the three Hellements. Use Fire, Lightning, and Wind tiles to trap your enemies, or augment your defenses.

    2022Strategy11.99 USDSingle-playerSimilar games →
  7. 7
    Hell Warders — Steam game cover

    Hell Warders

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Action and Strategy with Castle Defense Battles.

    Face the gates of Hell in a fusion of third-person action, RPG and Tower Defence. Repel the demons alone or in co-op by building defences. Upgrade powerful units to help you in battle, before jumping into the fight yourself, with an arsenal of skills and weapons to rip apart the oncoming swarm.

    2019ActionStrategyIndie3.74 USDSingle-playerSimilar games →
  8. 8
    Talisman: Digital 5th Edition — Steam game cover

    Talisman: Digital 5th Edition

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Strategy and Adventure with Castle Defense Battles.

    The definitive, most customisable version of Talisman, ever. Discover a world where every journey is a fresh experience in the ultimate digital sandbox for this iconic fantasy adventure board game. This is your Talisman, your rules.

    2024StrategyAdventureRPG29.99 USDDeck PlayableSingle-playerSimilar games →
  9. 9
    Shadow Ninja: Apocalypse — Steam game cover

    Shadow Ninja: Apocalypse

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Action and Strategy with Castle Defense Battles.

    Fast 2D ninja action where every mistake costs everything. Run, dodge, attack and survive as long as you can.

    2015ActionStrategyIndie4.99 USDDeck PlayableSingle-playerSimilar games →
  10. 10
    Red Fox and the Four Seasons — Steam game cover

    Red Fox and the Four Seasons

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Action and Indie with Castle Defense Battles.

    Embark on an enchanting adventure as Fox, exploring vibrant worlds of spring, summer, autumn, and winter. Jump, double jump, and overcome challenging obstacles in this captivating 2D platformer with stunning graphics. Skillfully navigate with just two buttons and uncover the secrets that lie within.

    2026ActionIndieAdventure4.99 USDSingle-playerSimilar games →
  11. 11
    Solitaire - Cat Pirate Portrait — Steam game cover

    Solitaire - Cat Pirate Portrait

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

    Solitaire - Cat Pirate Portrait - Experience the crisp, clear, and easy to read cards, simple and quick animations, and nice sounds, you can play with portrait views. You can move cards with a single tap or drag them to their destination.

    2017SportsStrategyIndie1.99 USDSingle-playerSimilar games →
  12. 12
    Puzzle: Underwater World — Steam game cover

    Puzzle: Underwater World

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

    Puzzle: Underwater World is a classical puzzle game invented in 1878, it’s still popular today. The sliding puzzle that consists of a frame of numbered square tiles in random order with one tile missing. The object of the puzzle is to place the tiles in order by making sliding moves that use the empty space.

    2017SportsStrategyIndie1.99 USDSingle-playerSimilar games →
  13. 13
    Rainbow Duck — Steam game cover

    Rainbow Duck

    Single-player alternative to Castle Defense Battles — playable solo, no multiplayer required. Shares Action and Indie with Castle Defense Battles.

    Turn the Duck upside down and defying the laws of gravity. Rainbow Duck is an addictive game that requires focus, concentration and precise timing. The intuitive one-tap controls allow you to discover the ideal path through all the challenging mazes.

    2019ActionSportsIndie1.99 USDSingle-playerSimilar games →
  14. 14
    Jewels of the Mysterious Woodland — Steam game cover

    Jewels of the Mysterious Woodland

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

    Jewels of the Mysterious Woodland - The new match 3 game is here, with brilliant jewels in over 600 dazzling puzzles! A magical journey filled with waves of excitement and brilliant visuals! Swap jewels to clear the way, and match pieces to crush each challenge that lies ahead.

    2017StrategyIndieAdventure3.99 USDSingle-playerSimilar games →
  15. 15
    Klondike Solitaire Kings — Steam game cover

    Klondike Solitaire Kings

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

    Famous Card game also known as Klondike. We kept the game true to the spirit of the classic Solitaire (also known as Klondike or Patience) Klondike Solitaire Kings features a beautiful custom designed card set in high resolution with 300+ levels, playing Patience on your desktop never looked this good!

    2017SportsStrategyIndie4.99 USDSingle-playerSimilar games →
  16. 16
    Mahjong Challenge — Steam game cover

    Mahjong Challenge

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

    Mahjong Challenge is the perfect game for the casual player looking for fun and extensive gameplay. The goal of this game is to match open pairs of identical tiles and remove them from the board. The game is finished when all pairs of tiles have been removed from the board.

    2017SportsStrategyIndie2.99 USDSingle-playerSimilar games →