Single-player games like Siegebreaker
Below are 9 single-player Steam games similar to Siegebreaker, 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 Siegebreaker page.
Ranked picks
- 1

Islets Defense
Single-player alternative to Siegebreaker — playable solo, no multiplayer required. Shares Strategy with Siegebreaker.
Islets Defense is a turn-based tower defense game in which you build a small village to gather resources and defend your castle. Carefully plan your actions, as each move brings the enemy waves closer! Strategize building placements and play your cards wisely, as timing and order are key.
- 2

Isle of Arrows
Single-player alternative to Siegebreaker — playable solo, no multiplayer required. Shares Strategy with Siegebreaker.
Isle of Arrows is a Puzzle Tower Defense game in which you build a fortress in the sky. Place towers, expand the isle, and build your own paths. Can you find the perfect spot for each tile to beat the RNG and defend against waves of invaders?
- 3

Nordhold
Single-player alternative to Siegebreaker — playable solo, no multiplayer required. Shares Strategy with Siegebreaker.
Enemies are coming! Every decision matters: build your city, grow the economy, and prepare for enemy waves. Strengthen your defenses, adapt your strategy, and unleash your hero’s full potential. This unique Tower Defense will test your skills – are you worthy to claim a place at Valhalla?
- 4

Tower Dominion
Single-player alternative to Siegebreaker — playable solo, no multiplayer required. Shares Strategy with Siegebreaker.
Build and design the terrain while defending your stronghold against alien invasion in this unique Roguelike tower defense. Choose from 30 heroes, survive enemy waves, and upgrade a variety of destructive towers to hold the line!
- 5

Crystal Guardians TD
Single-player alternative to Siegebreaker — playable solo, no multiplayer required. Shares Strategy with Siegebreaker.
Crystal Guardians is a tower defense game with rogue-like elements. Fight of waves and defend the world crystal. Gear up your towers with a powerful combination of items for your strategy. In an ever expanding map, find hidden powers and conquer the enemies.
- 6

Kingdom Rush Origins - Tower Defense
Single-player alternative to Siegebreaker — playable solo, no multiplayer required. Shares Strategy with Siegebreaker.
Command your elven army and defend mystical lands from sea serpents, evil sorcerers, and wave after wave of gnoll tribesman, all with the help of brand-spankin’ new towers, heroes, and spells to fend off every last baddie.
- 7

Refactor
Single-player alternative to Siegebreaker — playable solo, no multiplayer required. Shares Strategy with Siegebreaker.
Refactor is a hard-core tower defense game that combines modular building, route planning, and element composition.
- 8

Broken Universe - Tower Defense
Single-player alternative to Siegebreaker — playable solo, no multiplayer required. Shares Strategy with Siegebreaker.
Get ready to rethink all your defense strategies! Build barricades to stop monsters, or lure them into a maze and attack. A variety of stages that change each time depending on how you play them.
- 9

守卫魔兽-Guardian of Warcraft
Single-player alternative to Siegebreaker — playable solo, no multiplayer required. Shares Strategy with Siegebreaker.
This is a summoning tower defense strategy game, with different abilities of monsters and traps, with different effects. the player will continue to upgrade while defending, Become stronger, and summoning more powerful monsters to resist the brave.