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

Starbase Gunship
Single-player alternative to StarCalibur — playable solo, no multiplayer required. Shares Action and Simulation with StarCalibur.
Starbase Gunship places you in the seat of a weapons officer on a state-of-the-art Gunship as you defend a remote outpost from an Alien invasion fleet. With access to laser cannons, missiles, miniguns and nuclear warheads, you are the last line of defense between humanity and the alien invaders.
- 2

Star Squadron
Single-player alternative to StarCalibur — playable solo, no multiplayer required. Shares Action and Simulation with StarCalibur.
Star Squadron is a narrative-driven space combat simulator built for maximum immersion. Command your wing with freeform voice recognition and experience a dynamic campaign that calls you by name using our proprietary Voice Mimic System. Don't just play the game—live it.
- 3

IFO
Single-player alternative to StarCalibur — playable solo, no multiplayer required. Shares Simulation with StarCalibur.
A spaceship simulator for aliens, an ever-changing rule discovery puzzle for humans.
- 4

Rebel Galaxy Outlaw
Single-player alternative to StarCalibur — playable solo, no multiplayer required. Shares Action and Simulation with StarCalibur.
Out of cash, out of luck, out on the fringe. Juno Markev has a killer to tail, a debt to pay, and more trouble headed her way. Rebel Galaxy Outlaw takes place in a greasy, blue-collar world of outlaws, truckers, cops and thieves.
- 5

QANGA
Single-player alternative to StarCalibur — playable solo, no multiplayer required. Shares Action and Simulation with StarCalibur.
QANGA: 750 years after humanity's fall, you must survive in a shattered world where Earth itself demands vengeance. Tear through the fabric of space to face the Voss, awaken the ancient civilisation, and dare to challenge the Sanglines, born from the bowels of a world that condemned you.
- 6

Space Wars
Single-player alternative to StarCalibur — playable solo, no multiplayer required. Shares Simulation with StarCalibur.
Defend Earth's orbital station from alien invaders in SPACE WARS, a fast-paced arcade shooter. Customize your ship, upgrade weapons, and battle through intense levels to save humanity in this action-packed space adventure.
- 7

Dead Space™ 2
Single-player alternative to StarCalibur — playable solo, no multiplayer required. Shares Action with StarCalibur.
Three years after the Necromorph infestation aboard the USS Ishimura, Isaac Clarke awakens from a coma, confused, disoriented, and on a space station called The Sprawl. Explore this world and its zero-g environments to discover the truth about the Unitology and its role in the Necromorph epidemic.
- 8

Dead Space (2008)
Single-player alternative to StarCalibur — playable solo, no multiplayer required. Shares Action with StarCalibur.
You are Isaac Clarke, an engineer on the spacecraft USG Ishimura. You're not a warrior. You're not a soldier. You are, however, the last line of defense for the remaining living crew.
- 9

Rat Hunter
Single-player alternative to StarCalibur — playable solo, no multiplayer required. Shares Action with StarCalibur.
Rat Hunter features traditional, by-the-book gameplay, which does not wander into the realm of tactical shooters. Players will have to overcome different obstacles and solve various puzzles in order to get to the next level.