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

Sidewalk Simulator
Single-player alternative to Sci-Fantasy Defence — playable solo, no multiplayer required. Shares Action and Strategy with Sci-Fantasy Defence.
Sidewalk Simulator combines fast-paced shootout combat with a deep tower defense upgrade economy. Build, dodge, unlock, and fight to survive endless waves of 100+ unique enemies. Find balance between movement, power, and defense in each strange world you encounter.
- 2

Keep Keepers
Single-player alternative to Sci-Fantasy Defence — playable solo, no multiplayer required. Shares Action and Strategy with Sci-Fantasy Defence.
Tower Defense meets Base Management. Strategically place your defenses. Craft wacky ammunition like fiery peppers and boomerang bananas. Discover amazing weapons and automate your economy while defending against waves of enemies. Can you handle the chaos?
- 3

Rogue Star Rescue
Single-player alternative to Sci-Fantasy Defence — playable solo, no multiplayer required. Shares Action and Strategy with Sci-Fantasy Defence.
Bullet Hell Insanity + Tower Defense Strategy. Rogue Star Rescue is a quirky new type of rogue-like shooter. Blast your way through diverse planets while rescuing your teammates and gathering traps for your defense strategy. Play solo or online to stop the Rogue Star before it annihilates everything!
- 4

Devader
Single-player alternative to Sci-Fantasy Defence — playable solo, no multiplayer required. Shares Action and Strategy with Sci-Fantasy Defence.
Devader is an intense 90's-style twin-stick shooter, complete with crazy old-school bosses, powerful strategic abilities and multiple endings. Upgrade your robot with nukes, shields, turrets and more to exterminate the relentless invaders.
- 5

Patch Quest
Single-player alternative to Sci-Fantasy Defence — playable solo, no multiplayer required. Shares Action and Indie with Sci-Fantasy Defence.
In a labyrinth surrounded by vicious monsters, Explorers must rely on their Lasso to survive! Capture and tame ANY monster to leap, glide, surf, tunnel and websling through a treacherous, patchwork maze. This roguelike/metroidvania seems cute, but it’s a deceptively difficult bullet-hell challenge!
- 6

Voltaire: The Vegan Vampire
Single-player alternative to Sci-Fantasy Defence — playable solo, no multiplayer required. Shares Action and Indie with Sci-Fantasy Defence.
Rebel against your legacy in this farming action roguelite. Tend your spooky farm by day & defend your crops from enemies at night! Upgrade Voltaire, youngest son of Dracula, with devious new abilities & discover dozens of new plants to cultivate. Send dad a message: a vegan life is no missed steak!
- 7

Ooglians
Single-player alternative to Sci-Fantasy Defence — playable solo, no multiplayer required. Shares Action and Strategy with Sci-Fantasy Defence.
Ooglians are coming! Nothing excites an ooglian more than smashing machinery. Protect your machinery with more machinery which attracts even more ooglians. How unfortunate.
- 8

Cult of the Lamb
Single-player alternative to Sci-Fantasy Defence — playable solo, no multiplayer required. Shares Action and Strategy with Sci-Fantasy Defence.
Start your own cult in a land of false prophets, venturing out into diverse and mysterious regions to build a loyal community of woodland Followers and spread your Word to become the one true cult.
- 9

Brutal Wizardry
Single-player alternative to Sci-Fantasy Defence — playable solo, no multiplayer required. Shares Action and Indie with Sci-Fantasy Defence.
Brutal Wizardry is a VR magic shooter with randomly generated levels. Use telekinesis, magical weapons and mechanisms to destroy your enemies.