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Mars Underground

Mars Underground is an apocalyptic adventure where you relive the same day over and over. With each cycle new items can be picked up and topics unlocked.​ Explore the possibilities of this timeloop and uncover multiple endings.

Steam Page
Release
March 14, 2019
7 years and 142 days ago
Steam Reviews
Very Positive56 reviews96.4%

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Updated: Jul 14, 2026Developer scaleThe operating scale of the game's developer.
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Search Google: How is Mars Underground and Matt Sanderson funded?FundingThe known source of funding behind the game.
Updated: Jul 14, 2026Creative controlWho appears to retain creative control of the game.
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About the Game

If you like this game look up "Spooky Crew: Mask of the Mysterium" also on Steam. I have a demo out and I'm working really hard on it!

It's your first day at a new school. Every day is your first day at a new school. Every night the world ends.

Mars Underground is an apocalyptic adventure game where you relive the same day over and over. With each cycle new items can be picked up and topics unlocked.​

Take experimental prescription drugs. Talk to a toilet. Get hit by a car. Humiliate yourself repeatedly. All in the name of figuring out what on earth is going on.

  • Solve brain damaging mysteries.

  • Discover all the potential endings.

  • Find new stuff every cycle.

  • Talk, interact, annoy and generally bother the denizens of Phobos City as they try to go about their day.

  • All original, "dynamic" music soundtrack.

  • Can be fully played with either a keyboard, a controller or touch input.