39 Days to Mars

    Two players solve problems together aboard an unreliable spaceship bound for Mars.

    It's Anecdotal

    Playing together

    Online co-op
    1 source
    How co-op works
    1 source
    Local co-op
    1 source
    Free to play
    1 source
    Demo
    1 source
    Not known yet
    Online versus, Online multiplayer, Players in online co-op, Players online, Best with, Crossplay, Multiplayer through mods, One copy is enough, Plays in browser, Playtest, Early access

    Hover, focus or tap a fact to see where it came from.

    How you talk

    Not known yet
    Plays without voice or typing, Wordless tools, Public matchmaking, Friendly with strangers

    About the game

    Embark on the 19th century's most unreliable spaceship in this 2 player couch co-op adventure. 39 Days to Mars is a unique game designed to be played with a friend, where both players have important roles in the expedition. Solo players are aided by the computer-controlled ship's cat.
    From Steam

    Screenshots

    Why we rate it this way

    • 85% positive from 333 Steam reviews.
    • Critics rate it 70/100 from 2 reviews.
    Steam, checked 1 Nov 2026Num reviews: 1Review score: 8Review score desc: Very PositiveTotal positive: 283Total negative: 50Total reviews: 333{"num_reviews":1,"review_score":8,"review_score_desc":"Very Positive","total_positive":283,"total_negative":50,"total_reviews":333}IGDB, checked 1 Nov 2026Id: 32125Name: 39 Days to MarsUrl: https://www.igdb.com/games/39-days-to-marsCreated at: 1495702244First release date: 1524614400Total rating: 70.11103872853295Total rating count: 8Aggregated rating: 70Aggregated rating count: 2Release dates: [{"id":241877,"date":1572480000,"human":"Oct 31, 2019"},{"id":248177,"date":1557964800,"human":"May 16, 2019"},{"id":164193,"date":1524614400,"human":"Apr 25, 2018"},{"id":164714,"date":1549411200,"human":"Feb 06, 2019"},{"id":164716,"date":1524614400,"human":"Apr 25, 2018"},{"id":241875,"date":1572307200,"human":"Oct 29, 2019"},{"id":241876,"date":1572307200,"human":"Oct 29, 2019"},{"id":164717,"date":1524614400,"human":"Apr 25, 2018"},{"id":168800,"date":1557964800,"human":"May 16, 2019"}]Game type: {"id":0,"type":"Main Game"}Involved companies: [{"company":{"id":17660,"name":"It's Anecdotal"},"developer":true,"publisher":true}]{"id":32125,"name":"39 Days to Mars","url":"https://www.igdb.com/games/39-days-to-mars","created_at":1495702244,"first_release_date":1524614400,"total_rating":70.11103872853295,"total_rating_count":8,"aggregated_rating":70,"aggregated_rating_count":2,"release_dates":[{"id":241877,"date":1572480000,"human":"Oct 31, 2019"},{"id":248177,"date":1557964800,"human":"May 16, 2019"},{"id":164193,"date":1524614400,"human":"Apr 25, 2018"},{"id":164714,"date":1549411200,"human":"Feb 06, 2019"},{"id":164716,"date":1524614400,"human":"Apr 25, 2018"},{"id":241875,"date":1572307200,"human":"Oct 29, 2019"},{"id":241876,"date":1572307200,"human":"Oct 29, 2019"},{"id":164717,"date":1524614400,"human":"Apr 25, 2018"},{"id":168800,"date":1557964800,"human":"May 16, 2019"}],"game_type":{"id":0,"type":"Main Game"},"involved_companies":[{"company":{"id":17660,"name":"It's Anecdotal"},"developer":true,"publisher":true}]}

    Sources

    First listed 1 Nov 2026. Updated 3 Nov 2026.