Single-player games like Message From Aliens
Below are 16 single-player Steam games similar to Message From Aliens, 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 Message From Aliens page.
Ranked picks
- 1

Kerbal Space Program
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Indie with Message From Aliens.
In Kerbal Space Program, take charge of the space program for the alien race known as the Kerbals. You have access to an array of parts to assemble fully-functional spacecraft that flies (or doesn’t) based on realistic aerodynamic and orbital physics.
- 2

Star Trek: Voyager - Across the Unknown
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Strategy and Indie with Message From Aliens.
Star Trek: Voyager - Across the Unknown is a story-driven survival strategy game in which the fate of the iconic starship is in your hands. Take the helm, manage the ship and resources, and make difficult decisions. Will you be able to bring home the ship and its crew?
- 3

Universe Sandbox
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Indie with Message From Aliens.
Create & destroy on an unimaginable scale with a realistic physics-based space simulator. Explore the beauty of our universe and the fragility of our planet. Use science to bend the laws of gravity, collide planets, boil away oceans, fire epic space lasers, and customize your universe.
- 4

Lightracer Spark
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Strategy and Indie with Message From Aliens.
Lightracer Spark is a Sci-Fi Narrative game. You are an amender from a high civilization, descending to various extraterrestrial worlds. Guide living beings to prosperity, or nip a spark in the bud. Accumulate strength through choices and strategies to grasp the rise and fall of all civilizations.
- 5

Mars Horizon
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Strategy and Indie with Message From Aliens.
Lead a major space agency as you guide humanity to Mars in this strategy simulation game. Construct a base, design and build rockets, conduct missions throughout the Solar System, and write your own history of Space exploration. Created with support from the European Space Agency.
- 6

Voyager-19
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Indie with Message From Aliens.
A short horror game where you control a decaying spacecraft exploring distant star systems.
- 7

FTL: Faster Than Light
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Strategy and Indie with Message From Aliens.
This "spaceship simulation roguelike-like" allows you to take your ship and crew on an adventure through a randomly generated galaxy filled with glory and bitter defeat.
- 8

Sword of the Stars: The Pit
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Strategy and Indie with Message From Aliens.
A fun, fast, light-hearted, turn-based RPG, where the tradition of old school dungeon-diving games meets the sci-fi Sword of the Stars universe!
- 9

14 Minesweeper Variants
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Strategy and Indie with Message From Aliens.
Minesweeper but the rules are changing.
- 10

A=B
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Indie with Message From Aliens.
A=B is a programming puzzle game with only one instruction: A=B, which means replacing A with B.
- 11

Understand
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Indie with Message From Aliens.
Understand is an experimental puzzle game about guessing rules. In each level, you have to figure out the rules through trial and error, then draw a line satisfying all rules.
- 12

14 Minesweeper Variants 2
Single-player alternative to Message From Aliens — playable solo, no multiplayer required.
Minesweeper but the rules are changing, again.
- 13

YAPP: Yet Another Puzzle Platformer
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Indie with Message From Aliens.
A challenging puzzle platformer in which you clone and teleport.
- 14

YAPP2: Yet Another Pushing Puzzler
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Indie with Message From Aliens.
A weird 3d puzzle game.
- 15

Crayon Computer
Single-player alternative to Message From Aliens — playable solo, no multiplayer required.
Crayon Computer is a 2D physics-based open-ended programming puzzle game. (if you call that programming)
- 16

Spacecaps
Single-player alternative to Message From Aliens — playable solo, no multiplayer required. Shares Indie with Message From Aliens.
In this puzzling space capsule, you can only move left and right, but any direction could be your left and right!