Single-player games like Cosmic Gunslinger: Alien Outlaws
Below are 8 single-player Steam games similar to Cosmic Gunslinger: Alien Outlaws, 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 Cosmic Gunslinger: Alien Outlaws page.
Ranked picks
- 1

Go, Go Cowboy
Single-player alternative to Cosmic Gunslinger: Alien Outlaws — playable solo, no multiplayer required. Shares Indie and Adventure with Cosmic Gunslinger: Alien Outlaws.
Fast and hurricane Top-Down-Shooter where you act as a Sheriff in the Wild West and must quickly deal with all the bandits in the area, arm yourself with your trusty revolver and go on a dangerous journey!
- 2

Survival Of Exon
Single-player alternative to Cosmic Gunslinger: Alien Outlaws — playable solo, no multiplayer required. Shares Action and Indie with Cosmic Gunslinger: Alien Outlaws.
In Survival of Exon, strategic combat is key. Eliminate foes to collect coins and upgrade your character, becoming a force to be reckoned with. As the difficulty ramps up, you'll need to strategically enhance your gear to overcome the onslaught and emerge victorious.
- 3

Battle Survival in Space
Single-player alternative to Cosmic Gunslinger: Alien Outlaws — playable solo, no multiplayer required. Shares Action and Indie with Cosmic Gunslinger: Alien Outlaws.
Crowds of aliens attack from all sides, collect the necessary skills and survive.
- 4

Defend Earth: Xenos Survivors
Single-player alternative to Cosmic Gunslinger: Alien Outlaws — playable solo, no multiplayer required. Shares Action and Indie with Cosmic Gunslinger: Alien Outlaws.
You are Earth's last line of defense in a relentless alien invasion. Experience intense top-down roguelite action across diverse landscapes, fighting invaders with a versatile arsenal. Outsmart, outgun, and survive your foes. Every run increases the challenge - so adapt, evolve, dominate!
- 5

Dungeon Survivors
Single-player alternative to Cosmic Gunslinger: Alien Outlaws — playable solo, no multiplayer required. Shares Action and Indie with Cosmic Gunslinger: Alien Outlaws.
Dungeon Survivors is a top-down fantasy roguelite where you can use your class abilities to fight off a horde of fantasy monsters. Choose from a variety of abilities and items to create unique builds and survive with 1-4 players.
- 6

For Sparta
Single-player alternative to Cosmic Gunslinger: Alien Outlaws — playable solo, no multiplayer required. Shares Action and Indie with Cosmic Gunslinger: Alien Outlaws.
One million Persians invaded Greece and only you can stop them in this fast-paced single-screen arena roguelike with +200 gameplay-changing items. Die for freedom! Die For Sparta!
- 7

Tight Ride
Single-player alternative to Cosmic Gunslinger: Alien Outlaws — playable solo, no multiplayer required. Shares Action and Indie with Cosmic Gunslinger: Alien Outlaws.
Tight Ride is an adrenaline-fueled Arena Survival game. Your mission? To decimate waves upon waves of brainless zombies. But here's the twist: you won't be fighting on foot. No, no, no. You'll be cruising in a tactical buggy equipped with an array of heavy weaponry. Now buckle up.
- 8

RR
Single-player alternative to Cosmic Gunslinger: Alien Outlaws — playable solo, no multiplayer required. Shares Action and Indie with Cosmic Gunslinger: Alien Outlaws.
Fight to the beat in a cyberpunk nightclub where movement is your weapon and rhythm is your health. Move, attack, and dash on the beat in this top-down rhythm action roguelike. Chain precise actions, build combos, and survive escalating waves as the music speeds up and the arena grows more chaotic.