Single-player games like Iron Skies
Below are 12 single-player Steam games similar to Iron Skies, 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 Iron Skies page.
Ranked picks
- 1

Nova Swarm
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action and Indie with Iron Skies.
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.
- 2

GOD CORE
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action and Indie with Iron Skies.
A hardcore shoot 'em up that takes you back to the golden age of arcades. As the rogue Martian fleet brings the chill of doomsday, the GOD CORE plunges into battle alone. One striker. One chance. Unleash everything. Hold nothing back.
- 3

Metal Crisis
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action and Indie with Iron Skies.
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.
- 4

The Last Sideran
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action and Indie with Iron Skies.
A hand-drawn 2D arcade shoot 'em up following Zenia, the last Sideran. Dodge the Spikes, gather star essence, unlock ships with distinct weapons, and chase high scores through escalating runs.
- 5

Raiders 1941
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action with Iron Skies.
A hardcore challenging Shoot 'Em Up set during WWII - battle, shoot, bomb and weave your way accross the European Theatre.
- 6

Wrathflame
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action with Iron Skies.
A dark fantasy themed 2D top down real-time bullet hell shooter featuring retro Pico8 pixel graphics and chiptunes
- 7

Plasma Sky
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action and Indie with Iron Skies.
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!
- 8

Shin Sophstar
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action and Indie with Iron Skies.
Shin Sophstar is an electrifying remix built for speed and scoring. With 30 ship variants, mid-run ship switching, and an aggressive, deeply layered scoring system, it delivers a faster, sharper arcade experience for all skill levels.
- 9

Trigger Dungeon
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action and Indie with Iron Skies.
Rage inducing trap-filled precision platformer ideal for speedrunners and masochists alike. Navigate through nearly 200 hundred rooms filled with devious tricks and traps. Classic, easy to pick-up gameplay with colourful pixel art graphics.
- 10

Tameshi
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action with Iron Skies.
In this sideways scrolling shmup, take control of your spaceship and navigate through vibrant pixelated environments filled with hordes of enemy spacecraft. Power-up your ship and weapons, dodge enemy fire while blasting through each stage. Survive the onslaught and emerge victorious!
- 11

Chromacell
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action with Iron Skies.
In this sideways scrolling shmup, take control of your spaceship and navigate through vibrant pixelated environments filled with hordes of enemy spacecraft. Upgrade your ship and weapons, dodge enemy fire while blasting through each stage. Emerge victorious as the ultimate space pilot!
- 12

Tiny Racing
Single-player alternative to Iron Skies — playable solo, no multiplayer required. Shares Action with Iron Skies.
A nostalgic top-down racing game with vibrant pixel art. Choose from unique vehicles, conquer constrasting tracks, and master different modes. With intuitive arcade controls, experience high-speed excitement and become the ultimate racing champion in this retro race adventure!