Steam Game List

Colossus Mission: Explore an Alien Spaceship in this 2D Arcade Adventure

Price: $2.99

Released: 3/8/2021

Tags: #casual #arcade #sci-fi #platformer

Motor Assailant: Vehicular Combat Meets Alien First Contact

Price: $0.79

Released: 3/30/2021

84% OFF

Tags: #vehicular-combat #sci-fi #combat #offroad

Invaders from Dimension X: Solo Sci-Fi Strategy Wargame

Price: $12.99

Released: 1/23/2019

Tags: #strategy #indie #singleplayer #wargame

Who Are You!?: Sci-Fi Psychological Horror to Save Your Family

Price: $7.99

Released: 3/27/2026

Tags: #horror #aliens #first-person #singleplayer

The Dancer: Definitive Edition - Hilarious Horror Parody

Price: $0.99

Released: 8/1/2022

Tags: #action #shooter #3d #aliens

Space Mutants: Survive an Alien Apocalypse on a Desolate Moon

Price: Free

Released: 6/1/2023

Tags: #action #platformer #shooter #2d-platformer

Deported: Drain the Swamp - Agent Grump's Alien Deportation Mission

Price: $0.99

Released: 11/5/2018

Tags: #linear #relaxing #space #comedy

The Human Show: Asymmetrical Horror Meets Reality TV

Upcoming (unreleased)

Release date: Unknown

Tags: #horror #psychological-horror #multiplayer #first-person

Make War: Command Time-Traveling Armies in a Sandbox Strategy

Price: $5.99

Released: 8/14/2019

Tags: #strategy #sandbox #simulation #indie

Space Routine: A Goofy Physics-Based Life Sim in Space

Upcoming (unreleased)

Release date: Unknown

Tags: #simulation #casual #indie #life-sim

InfestStation: Sci-Fi Survival Horror in Early Access

Price: $3.99

Released: 7/22/2024

Tags: #sci-fi #horror #exploration #atmospheric

Monsters Sandbox: Intense Arena Combat with Detailed Gore Mechanics

Price: $0.99

Released: 12/11/2019

Tags: #arena-shooter #hack-and-slash #zombies #aliens

Mokete: Alien Trainer Roguelite on Earth

Upcoming (unreleased)

Release date: Unknown

Tags: #turn-based-strategy #roguelite #card-battler #aliens

The Great Fluctus: Build, Explore, and Survive an Alien Sandbox

Upcoming (unreleased)

Release date: Unknown

Tags: #sandbox #sci-fi #resource-management #relaxing

The Bureau: XCOM Declassified - Lead a Secret Cold War Unit Against Aliens

Price: $3.99

Released: 8/19/2013

80% OFF

Tags: #action #tactical #sci-fi #third-person-shooter

Simple Nightmares: Strategic Shooter - Escape the Dream

Price: $7.99

Released: 4/20/2025

Tags: #indie #aliens #action #combat

Sentinel: Stones of Disruption - Rogue-lite Action on an Alien World

Upcoming (unreleased)

Release date: Unknown

Tags: #action #arcade #roguelike #shoot-'em-up

Gone Upstate 2: Big Sky Country - Survive the Frontier with Friends

Upcoming (unreleased)

Release date: Unknown

Tags: #aliens #looter-shooter #singleplayer #multiplayer

Afterglitch: A Philosophical Sci-Fi Journey Beyond Space-Time

Price: $9.99

Released: 12/9/2022

Tags: #sci-fi #atmospheric #philosophical #futuristic

Abducted: Survive an Alien Encounter from Your RV

Upcoming (unreleased)

Release date: Unknown

Tags: #indie #horror #psychological-horror #investigation

Hyperbase: Survive Alien Mazes and Uncover Galactic Secrets

Price: $3.99

Released: 5/16/2022

Tags: #adventure #sci-fi #arcade #aliens

Space Candy: Arcade Block-Breaker with Alien Antics

Price: $4.99

Released: 11/9/2019

Tags: #space #perma-death #arcade #casual

Starbase Gunship: Defend the Outpost from Alien Drones

Price: $9.99

Released: 12/2/2021

Tags: #action #space-sim #simulation #flight

Touhou - Reimu's Awesome Holiday: A Choice-Driven RPG Adventure

Price: Free

Released: 10/5/2022

Tags: #rpg #jrpg #cartoon #comedy

Rogue Weapon: Unleash Your Arsenal in an Alien FPS Roguelike

Upcoming (unreleased)

Release date: Unknown

Tags: #action #action-roguelike #fps #roguelite

Save Our Solar System: Defend Planets in a Space Tower Defense

Price: Free

Released: 3/28/2023

Tags: #strategy #tower-defense #bullet-hell #shooter

BIG SHOTS: Become an Alien Exterminator in This VR Roguelite

Price: $19.99

Released: 4/17/2024

Tags: #vr #cartoony #aliens #online-co-op

Xatrom Command: Blast Aliens in Co-Op Mayhem

Price: $5.99

Released: 3/8/2024

Tags: #action #third-person-shooter #twin-stick-shooter #local-co-op

They Look Like People: A Sci-Fi Horror Journey into the Abyss

Price: $1.99

Released: 11/29/2021

Tags: #horror #psychological-horror #atmospheric #action

Sky Symphony: Master the Skies in a Side-Scrolling Flying Adventure

Price: $0.99

Released: 4/1/2023

Tags: #casual #3d-fighter #3d-platformer #2.5d

ALIEN XENOBLASTER: Blast Your Way Through a Polluted Galaxy

Price: $4.99

Released: 8/23/2022

Tags: #action #casual #arcade #2d-platformer

West Escape: Wild West Meets Sci-Fi Mayhem

Price: $1.49

Released: 4/10/2025

75% OFF

Tags: #adventure #action #western #3d

Cosmic Companions: Explore, Befriend, and Build an Alien Community

Upcoming (unreleased)

Release date: Unknown

Tags: #life-sim #exploration #aliens #relaxing

Pewt 'em Up!: Retro Arcade Shooter with Roguelite Twists

Price: Free

Released: 6/8/2022

Tags: #action #arcade #shooter #shoot-'em-up

Alien Break: Breakout Meets Bullet Hell

Price: $3.99

Released: 8/16/2024

Tags: #casual #3d #singleplayer #arcade

Botland Chronicles: Retro 2D Platformer Action

Upcoming (unreleased)

Release date: Unknown

Tags: #action #platformer #2d-platformer #2d

Planet B24: Abducted for Alien Experiments

Price: $4.99

Released: 7/20/2021

Tags: #indie #adventure #action #fps

Blood Storm: Alien Purge - Blast Through Alien Horrors

Price: $4.99

Released: 8/21/2025

Tags: #on-rails-shooter #shooter #first-person #gore

Present Cannon Rebirth: Santa's VR Sleigh Shooter

Price: Free

Released: 12/21/2021

Tags: #action #arcade #shooter #on-rails-shooter

Star Hive: The Menace - Defend Earth from Alien Invasion

Price: $15.99

Released: 3/2/2023

Tags: #bullet-hell #aliens #arcade #spaceships

Desolate Shores: Survive Alien Hordes on Futuristic Mars

Price: Free

Released: 5/12/2022

Tags: #3d-fighter #shooter #third-person-shooter #action

WALLS: First-Person Horror with Bizarre Visuals and VHS Camera

Price: $2.99

Released: 5/9/2025

Tags: #3d-platformer #hidden-object #3d #cinematic

Toward Aliens and Beyond: Intense Arcade Shoot 'Em Up

Price: $0.99

Released: 4/17/2025

Tags: #casual #arcade #shooter #roguelite

The Giant Crab in Space: Galactic Revenge Simulation

Price: $7.99

Released: 8/15/2025

Tags: #simulation #sci-fi #action #destruction

Earth Defense Force: Insect Armageddon - Annihilate Giant Bugs!

Price: $6.99

Released: 12/14/2011

30% OFF

Tags: #action #third-person-shooter #co-op #online-co-op

UFO: Aftermath - Tactical Strategy Against Alien Invasion

Price: $3.99

Released: 4/23/2014

Tags: #strategy #tactical #singleplayer #aliens

Vox Populi: Germany 2025 - Lead Your Political Campaign in an Alternate Future

Price: $7.99

Released: 2/7/2025

Tags: #political-sim #management #politics #card-battler

Mystery Solitaire. Cthulhu Mythos 2: Eldritch Card Puzzles

Price: $2.24

Released: 5/25/2023

Tags: #casual #board-game #card-game #puzzle

Darkly Darkness: Save Earth from Alien Invaders in 2D Action

Price: $2.99

Released: 8/1/2024

Tags: #action #casual #arcade #2d-platformer

XCOM: Chimera Squad – Lead an Elite Force in a City of Coexistence

Price: $9.99

Released: 4/23/2020

Tags: #strategy #turn-based-tactics #turn-based-strategy #turn-based