Single-player games like Module TD. Sci-Fi Tower Defense
Below are 10 single-player Steam games similar to Module TD. Sci-Fi Tower 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 Module TD. Sci-Fi Tower Defense page.
Ranked picks
- 1

Prime World: Defenders
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
Fight off hordes of monstrous mutants created from a strange cataclysmic event in the new tower defense game, Prime World: Defenders. Join a group of exile treasure hunters who have ventured into the capital of an ancient empire, vast with mystery and danger.
- 2

Cubemen 2
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
Cubemen 2 is a fast paced, action packed, original 3D Strategy game where you use your little Cubemen units to defend and attack enemies in a range of awesome game modes including CTF, Skirmish, Territory and more.
- 3

Tower Wars
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
Tower Wars combines elements of tower defense, RTS, and all-out multi-player mayhem to bring you a completely unique experience, delivered with a fun and funny not-so-old world style!
- 4

Revenge of the Titans
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
The ultimate mash-up of Real-time Strategy and Tower Defense!
- 5

Defense Grid: The Awakening
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
Defense Grid: The Awakening is a unique spin on tower defense gameplay that will appeal to players of all skill levels. A horde of enemies is invading, and it's up to the player to stop them by strategically building fortification towers around their base.
- 6

Sanctum
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
You think Tower Defense games are all about building? You thought wrong. Sanctum is not your average Tower Defense title. When the havoc starts, you get to join the fray! As one of the world’s first First Person Shooter - Tower Defense games, Sanctum has taken the best of both worlds to deliver an epic, one-of-a-kind experience.
- 7

Mushroom Wars 2
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
In Mushroom Wars 2, enemy tribes of feisty mushroom creatures face off in short but fierce RTS battles. Step into the shoes of a fearless Mushroom Commander, choose a hero to lead your army, and take control of the battlefield in a variety of multiplayer modes or challenging story campaign.
- 8

Infested Planet
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
Command a team of 5 elite soldiers against an alien horde of 100,000. Surrounded on all sides, you must outmaneuver and outsmart the enemy.
- 9

Planet Modular TD
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
Tower defense offline game with many defense strategies. Gem of TD games
- 10

Fantasy Realm TD
Single-player alternative to Module TD. Sci-Fi Tower Defense — playable solo, no multiplayer required. Shares Strategy and Indie with Module TD. Sci-Fi Tower Defense.
Try tower defense with many towers & defense strategies! TD game from TD players