Single-player games like CosmoOdyssey:Trip to Mars
Below are 14 single-player Steam games similar to CosmoOdyssey:Trip to Mars, 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 CosmoOdyssey:Trip to Mars page.
Ranked picks
- 1

Red Planet Rampart
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and Adventure with CosmoOdyssey:Trip to Mars.
You are deployed to the desolate red planet to reforge humanity's hope. With no hospitable atmosphere, no nurturing water sources, only relentless storms, unknown alien creatures, you must use wit and determination to survive on this alien land and build a Mars base of your own.
- 2

PlanetMars3D: Spirit Mission
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and Adventure with CosmoOdyssey:Trip to Mars.
Explore Mars in 3D through real Pancam photographs from NASA's Spirit rover. Glide between images with detail that sharpens as you approach, and skim thousands of rover photos at a glance — manual mode, slideshow, or automated flythrough. Photo credit: JPL / NASA / Cornell / ASU
- 3

Yavi
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and RPG with CosmoOdyssey:Trip to Mars.
A retro styled 2D Sci-Fi RPG including robot fighting, hilarious dialogues and a great story that will make you laugh and cry - if you're a sensitive person (which is nothing to be ashamed of!).
- 4

Utopia Colony
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and Adventure with CosmoOdyssey:Trip to Mars.
The year is 2033. You, an ex-Marine with little opportunities left, have signed up with Utopia Arura, a large mining corporation on Mars. They have sent you to a location they have proposed but you have chosen for mining. Everything else is up to you.
- 5

Belt Colony
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and Adventure with CosmoOdyssey:Trip to Mars.
The year is 2040. You, an ex-sergeant, have signed a contract with a large mining corporation in the Belt. Mine ore, build out your outpost, travel to nearby asteroids and collaborate with other belters.
- 6

Terraspace
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Adventure and Casual with CosmoOdyssey:Trip to Mars.
The game "Terraspace" offers you a unique experience of planet settlement and terraforming — creating conditions for life on unsuitable planets. This will require you to build the necessary structures to populate the planet.
- 7

Surviving Mars: Pioneer
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Adventure and Casual with CosmoOdyssey:Trip to Mars.
The Red Planet is vast, desolate, and utterly indifferent to your survival. Surviving Mars: Pioneer is the first made-for-VR entry in the Surviving Mars universe, challenging you to carve out an existence in one of the most hostile environments imaginable.
- 8

Rebel Galaxy Outlaw
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and Adventure with CosmoOdyssey:Trip to Mars.
Out of cash, out of luck, out on the fringe. Juno Markev has a killer to tail, a debt to pay, and more trouble headed her way. Rebel Galaxy Outlaw takes place in a greasy, blue-collar world of outlaws, truckers, cops and thieves.
- 9

CosmoOdyssey 2: Comeback to origin
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and Casual with CosmoOdyssey:Trip to Mars.
CosmoOdyssey 2: comeback to origin is a continuation of the comedy quest with a Ukrainian flavor about an agronomist from Kharkiv region.
- 10

Chronicles of Vipers
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and Adventure with CosmoOdyssey:Trip to Mars.
Chronicles of Vipers is a remake-demake first-person shooter inspired by old 8-bit and 16-bit console games, as well as VHS-era movies.
- 11

Son of Perun Kharkiv
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and Adventure with CosmoOdyssey:Trip to Mars.
Son of Perun: Kharkiv is a first-person shooter in the setting of Kharkiv of the future and retrowawe.
- 12

Twenty-second: Stories of Underground Kharkiv
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie with CosmoOdyssey:Trip to Mars.
The Twenty-Second: Stories of Underground Kharkiv is a quest and a visual novel that will tell you in the first person about the events of 2022 in the Kharkiv metro.
- 13

Барабан: Майстер-торгаш
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and RPG with CosmoOdyssey:Trip to Mars.
Baraban: Master of Bargain is a first-person marketplace buyer simulator set in the setting of retroview and Kharkiv of the future!
- 14

The Hollow
Single-player alternative to CosmoOdyssey:Trip to Mars — playable solo, no multiplayer required. Shares Indie and Adventure with CosmoOdyssey:Trip to Mars.
The Hollow is a first-person shooter with a semi-open world set in the Tunguska anomaly and Ukrainian adventure novel.