Single-player games like Planetary Defense: An Orbital Turret Defense System
Below are 8 single-player Steam games similar to Planetary Defense: An Orbital Turret Defense System, 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 Planetary Defense: An Orbital Turret Defense System page.
Ranked picks
- 1
Blasteroids
Single-player alternative to Planetary Defense: An Orbital Turret Defense System — playable solo, no multiplayer required. Shares Action and Strategy with Planetary Defense: An Orbital Turret Defense System.
Blast your way through waves of space debris in order to reach what is waiting for you on the other side. Find your fighting style with multiple unlockable ships in this fast paced space adventure!
- 2
XenoFeud
Single-player alternative to Planetary Defense: An Orbital Turret Defense System — playable solo, no multiplayer required. Shares Action and Indie with Planetary Defense: An Orbital Turret Defense System.
XenoFeud is an insane top-down twin-stick arcade alien shooter, where you must survive hordes of alien intruders while defending a mysterious object in space.
- 3
Unearthing Invasions
Single-player alternative to Planetary Defense: An Orbital Turret Defense System — playable solo, no multiplayer required. Shares Action and Strategy with Planetary Defense: An Orbital Turret Defense System.
A 3d tower defense game set in space. Protect the last resource outposts from the ongoing Alien attacks! Can you hold out in these ever increasing difficult waves of enemies and protect the last of your resources and Energy?
- 4
Night Light
Single-player alternative to Planetary Defense: An Orbital Turret Defense System — playable solo, no multiplayer required. Shares Action and Strategy with Planetary Defense: An Orbital Turret Defense System.
Defend against the creatures of that night! Protect yourself and your lamp by building and upgrading your base. Equip yourself with the best weapons to deal with the incoming waves.
- 5
Rombykon
Single-player alternative to Planetary Defense: An Orbital Turret Defense System — playable solo, no multiplayer required. Shares Action and Strategy with Planetary Defense: An Orbital Turret Defense System.
Become Romby, a tiny crystal lost in space! Survive and defend the crystal against dark waves by upgrading crazy weapons, planting strange flowers, and using tarot cards. Explore constellations, defeat bosses, and unlock over 100 unique skills.
- 6
HyperFeat
Single-player alternative to Planetary Defense: An Orbital Turret Defense System — playable solo, no multiplayer required. Shares Action and Indie with Planetary Defense: An Orbital Turret Defense System.
A top down 2D space shooter bullethell with roguelike elements awaits you. Dodge, weave and shoot your way through waves of enemies while gaining upgrades trying to survive as long as possible.
- 7
Tower Tactics Arena
Single-player alternative to Planetary Defense: An Orbital Turret Defense System — playable solo, no multiplayer required. Shares Action with Planetary Defense: An Orbital Turret Defense System.
Tower Tactics Arena is a fast-paced action roguelite set in the Tower Tactics: Liberation universe. Battle relentless enemy waves in a closed combat arena, level up your towers strategically, and gather powerful trinkets and potions! Will you claim victory in the arena?
- 8
Dwarf Star
Single-player alternative to Planetary Defense: An Orbital Turret Defense System — playable solo, no multiplayer required. Shares Action and Indie with Planetary Defense: An Orbital Turret Defense System.
Dwarf Star: 16 bit inspired game where mercenary go shoot shoot on evil alien guys who were accidentally fabricated by the government. Top down space shooter with a mission based structure. However, you can do these missions in plenty of different orders with different amounts of upgrades.