Single-player games like Galactic Plague 2000
Below are 8 single-player Steam games similar to Galactic Plague 2000, 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 Galactic Plague 2000 page.
Ranked picks
- 1

Plasma Sky
Single-player alternative to Galactic Plague 2000 — playable solo, no multiplayer required. Shares Action and Indie with Galactic Plague 2000.
This week, every pilot on Earth flies the same new seeded run: identical enemies, identical drops, pure skill. Flow through alien formations, arm your wingmen, and power up when you can. Out-score your friends in Plasma Sky, an arcade shmup with over 100 handcrafted levels. Blast into the neon sky!
- 2

Metal Crisis
Single-player alternative to Galactic Plague 2000 — playable solo, no multiplayer required. Shares Action and Indie with Galactic Plague 2000.
METAL CRISIS is a side-scrolling shoot 'em up inspired by 3D space shooters of the 90s. Pilot the most advanced ship Earth has created capable of acquiring enemy weapons as you battle through hordes of fighters and hulking bosses in it's war against the space colonies rebellion.
- 3

ASTROXION
Single-player alternative to Galactic Plague 2000 — playable solo, no multiplayer required. Shares Action and Indie with Galactic Plague 2000.
Pilot a powerful starfighter through an endless alien invasion. Rescue the Cubes, survive relentless alien waves, and chase the ultimate high score in this fast-paced arcade space shooter.
- 4

A Blast From The Past
Single-player alternative to Galactic Plague 2000 — playable solo, no multiplayer required. Shares Action and Indie with Galactic Plague 2000.
A Blast from the Past is a stunning, classic arcade shooter. Includes gameplay modes for the casual gamer through to "Tournament Mode" for Hi-Score hunters! With 4K/360Hz+ support, experience smooth as silk gameplay in this dazzling arcade blaster with something for every arcade-going fan!
- 5

Nova Swarm
Single-player alternative to Galactic Plague 2000 — playable solo, no multiplayer required. Shares Action and Indie with Galactic Plague 2000.
Pick a ship, dive into readable bullet chaos, take down huge angry bosses, grab the bonus core you probably should have left alone, and chase one cleaner run in Nova Swarm.
- 6

Blast'N Bounty
Single-player alternative to Galactic Plague 2000 — playable solo, no multiplayer required. Shares Action and Indie with Galactic Plague 2000.
Blast’N Bounty is a vertical scrolling shoot’em up featuring 8 stages players can tackle in the order of their choosing. Cruise through a crazy solar system in a mix of pixel art and low poly 3D with action that’s easy to learn but tough to master!
- 7

Earthion
Single-player alternative to Galactic Plague 2000 — playable solo, no multiplayer required. Shares Action with Galactic Plague 2000.
Earthion is a side-scrolling space shooter developed natively for 16-bit systems. Guide space fighter pilot Azusa Takanashi in her fight to repel the alien invaders and save planet Earth.
- 8

The Hurricane of the Varstray -Collateral hazard-
Single-player alternative to Galactic Plague 2000 — playable solo, no multiplayer required. Shares Action and Indie with Galactic Plague 2000.
【About "The Hurricane of the Varstray"】"The Hurricane of the Varstray" is a vertically scrolling shoot'em up with a SF story: in the distant future, to defend the Earth against the invasion of mystery mechanical structures, 4 girls head to "the Varstray sector," far away from the Earth and considered as the v