Single-player games like Guntech 2
Below are 9 single-player Steam games similar to Guntech 2, 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 Guntech 2 page.
Ranked picks
- 1

Space Dragons
Single-player alternative to Guntech 2 — playable solo, no multiplayer required. Shares Action with Guntech 2.
Choose your spaceship and defeat the alien threat that comes from the Moon. Blast your way crushing, ripping apart and exploding hostile aliens that are taking control of powerful weapons and military technology from Earth. Find the entity that controls the threat and make it explode into blood.
- 2

URG
Single-player alternative to Guntech 2 — playable solo, no multiplayer required. Shares Action with Guntech 2.
URG is a retro-style side-scrolling arcade shooter with beautiful 3D graphics and a ton of action with big explosions and a co-op mode for up to four players.
- 3

Zero Wing
Single-player alternative to Guntech 2 — playable solo, no multiplayer required. Shares Action with Guntech 2.
Defend the galaxy from vicious space pirates! Seize your foes and fire them back at their allies for devastating destruction in Toaplan's legendary horizontal arcade shooter, now on PC with all-new features and quality-of-life bonuses!
- 4

Overdriven Reloaded
Single-player alternative to Guntech 2 — playable solo, no multiplayer required. Shares Action with Guntech 2.
Shoot' Em Up, Vertical Fast & Fun !The Overdriven Ship is back :More better, more intense, and more beautiful !
- 5

Stardust Galaxy Warriors: Stellar Climax
Single-player alternative to Guntech 2 — playable solo, no multiplayer required. Shares Action with Guntech 2.
Stardust Galaxy Warriors: Stellar Climax is a fast-paced couch co-op action shooter with SHMUP/Brawler gameplay and RPG elements. Choose your mechs, weapons & upgrades then soar through space, defeat evil & save the future... from itself!
- 6

Contra: Operation Galuga
Single-player alternative to Guntech 2 — playable solo, no multiplayer required. Shares Action with Guntech 2.
The legendary Contra series returns! This reimagining of the classic run-'n'-gun action game from the ‘80s features new stages, new enemies, new play mechanics, and co-op combat for up to 4 players!
- 7

G-Darius HD
Single-player alternative to Guntech 2 — playable solo, no multiplayer required. Shares Action with Guntech 2.
You will see the creation of new lives... Capture enemies and fire them back at their allies as enormous beams of energy in this horizontally scrolling shooting game, featuring 5 versions of G-Darius with new features, enhancements, and Steam exclusive extras!
- 8

Rogue Stormers
Single-player alternative to Guntech 2 — playable solo, no multiplayer required. Shares Action with Guntech 2.
An action packed platform shooter mashed-up with roguelike and RPG elements, crazy 3D graphics and co-op multiplayer for one to 4 players.
- 9

Utopos
Single-player alternative to Guntech 2 — playable solo, no multiplayer required. Shares Action with Guntech 2.
Utopos is a MOSA - Multiplayer Online Space Arena! Gameplay is from a top-down angle, dual-stick shooter and you can play against your friends online, or against AI-controlled opponents.