Single-player games like Phobos Down
Below are 8 single-player Steam games similar to Phobos Down, 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 Phobos Down page.
Ranked picks
- 1

Hello Space
Single-player alternative to Phobos Down — playable solo, no multiplayer required. Shares Action and Indie with Phobos Down.
Dive into a 2D action game where you control a spaceship, defeat enemies and overcome deadly traps. Extend your arsenal by collecting new weapons and technologies for your ship that you will need to conquer four different dungeon-like worlds, all connected by an open space full of surprises.
- 2

Burst Hero
Single-player alternative to Phobos Down — playable solo, no multiplayer required. Shares Action and Indie with Phobos Down.
Burst Hero is a pixel roguelike shooting survival game. You can choose heroes with different abilities and use various weapons to resist a steady stream of enemies. In the battle, you can customize your build by weapons bullets and cards. Each battle will have different experiences and challenges.
- 3

Starfighter Neon
Single-player alternative to Phobos Down — playable solo, no multiplayer required. Shares Action and Indie with Phobos Down.
You've been dropped into enemy space. Weave your Starfighter between alien spaceships, lasers, asteroids and bombs destroying as many as you can and collecting valuable coins and powerups as you go.
- 4

It came from space and ate our brains
Single-player alternative to Phobos Down — playable solo, no multiplayer required. Shares Action and Indie with Phobos Down.
It came from space and ate our brains is a unique Arcade top-down shooter. Looking for addicting gameplay, four-player co-op mode, and tons of aliens to send into oblivion? You’ve come to the right place!
- 5

Shadowgrounds
Single-player alternative to Phobos Down — playable solo, no multiplayer required. Shares Action with Phobos Down.
Shadowgrounds breathes fresh air into the action genre with explosive combat sequences, an innovative weapon upgrade system, and an intriguing storyline. The adrenaline-pumping, top-down gameplay and audiovisual fireworks set the scene for this new action experience which also includes single computer (split keyboard or joystick) co-op...
- 6

Alien Breed: Impact
Single-player alternative to Phobos Down — playable solo, no multiplayer required. Shares Action with Phobos Down.
Experience the explosive science fiction arcade-shooter that resurrects a much revered franchise in an epic single player and co-op multiplayer campaign.
- 7

God's Trigger
Single-player alternative to Phobos Down — playable solo, no multiplayer required. Shares Action and Indie with Phobos Down.
Slay enemies with speed and precision in an over-the-top show of blood and explosions. Play solo or with others, make split-second decisions, dodge bullets, and use weapons and abilities to inflict violence in the most graphic way possible.
- 8

Flame Over
Single-player alternative to Phobos Down — playable solo, no multiplayer required. Shares Action and Indie with Phobos Down.
Blending top down "squirt em-up" action and "Pyroguelike" game mechanics, Flame Over features fast-paced fire-fighting thrills, randomly generated levels, 4 different game zones and dastardly hazards at every turn!