Single-player games like Polybius Invaders
Below are 10 single-player Steam games similar to Polybius Invaders, 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 Polybius Invaders page.
Ranked picks
- 1

Dyflexion
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action with Polybius Invaders.
A vertical scroll shooter where deflecting enemy projectiles is key to success.
- 2

ROBOCRACY
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action and Indie with Polybius Invaders.
Take on the challenge and face off against a rogue AI bent on enslaving humanity! Strap on your VR headset, step into the boots of a Galactic Ranger, and tear through waves of robots with explosive blasters, devastating shotguns, and an insane arsenal — just like classic arcade shooters!
- 3

I, AI
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action and Indie with Polybius Invaders.
Classic scrolling shooter with modern graphics. You are self-aware AI. You were created on space military station developing weapons. Now your goal is to break out of the lab and win your freedom.
- 4

Astebreed: Definitive Edition
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action and Indie with Polybius Invaders.
Climb into the cockpit of an otherworldly war machine and fly into battle against a horrifying alien race bent on eradicating humanity to preserve their own civilization.
- 5

Waves
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action and Indie with Polybius Invaders.
Waves is an Arcade Twin-Stick Shooter that's all about High Scores. Build your combo and drop bombs in pursuit of Leaderboard dominance over seven game-modes!
- 6

Mirage Feathers
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action and Indie with Polybius Invaders.
「Maybe one day, I won't have to fight when I fly.」
- 7

//N.P.P.D. RUSH//- The milk of Ultraviolet
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action and Indie with Polybius Invaders.
So nauseous pines, This noxious abyss, I feed from the milk, of ultra violet, Yet I'm lost with you, My floating twin, You're the anchor to the drain, but I am the key, To nothing.
- 8

CYGNI: All Guns Blazing
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action and Indie with Polybius Invaders.
An unrelenting onslaught of eye-popping visuals, ear bursting soundscapes and mind-melting action makes CYGNI the vanguard for the next generation of shoot-em ups. Outgunned, outmanned and out on your own, plunge into a sky full of hell in a last-ditch battle for survival.
- 9

1979 Invasion Earth
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action and Indie with Polybius Invaders.
1979 Invasion Earth is a compilation of four Casual Arcade Shooter games based on a classic retro games from when i was a young lad..
- 10

Galactoids - Galactic Invaders
Single-player alternative to Polybius Invaders — playable solo, no multiplayer required. Shares Action and Indie with Polybius Invaders.
Battle swarms of Galactic Invaders in this action-packed retro-inspired arcade shoot em up. May the Nerd be with you.