Explore the vast terrains of Mars, generated from real NASA satellite data, and survive by discovering randomized supply caches and habitats. Adventure in an otherworldly first-person sandbox.
User reviews:
Mixed (19 reviews) - 68% of the 19 user reviews for this game are positive.
Release Date: May 17, 2017

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Early Access Game

Get instant access and start playing; get involved with this game as it develops.

Note: This Early Access game is not complete and may or may not change further. If you are not excited to play this game in its current state, then you should wait to see if the game progresses further in development. Learn more

What the developers have to say:

Why Early Access?

“Random Seed Games is currently only one full-time developer and a few part-time contributors. I want to get as much feedback as possible on the Survival Sandbox gameplay systems while I continue to expand the game and add features in preparation for a Story Mode.”

Approximately how long will this game be in Early Access?

“It is likely that Lacuna Passage will be in Early Access for at least a year before Story Mode is available.”

How is the full version planned to differ from the Early Access version?

“Story Mode is my long term goal, but I will respond to player's interests with the Survival Sandbox. I will be targeting monthly updates that will address bugs and add new features.”

What is the current state of the Early Access version?

“Lacuna Passage currently exists only as a Survival Sandbox, with an emphasis on the "Sandbox". There is no narrative. There is no combat. This is a very small game with light survival mechanics. The primary activity is exploration. If you are satisfied by "walking simulators" or have an interest in space photography you might find the Early Access version compelling. If you want a more structured and goal-oriented experience you might want to wait until the Story Mode is finished.”

Will the game be priced differently during and after Early Access?

“I may gradually raise the price as I ship new content and features.”

How are you planning on involving the Community in your development process?

“The main reason I am releasing on Steam Early Access is so that I can get feedback from players. I plan to engage with the community on the Steam discussion forums and the official feedback forum that is accessible through the game's main menu.”
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Recent updates View all (2)

July 4

Survival Stats Update - v0.57

Today's update is an attempt to add some new player progression goals to the survival sandbox including achievements and leaderboards. Check the full change log below.

Change Log
  • Achievements have been added for a range of survival goals.
  • Leaderboards have been added for survival time and distance traveled in a single playthrough.
  • A stats screen will now be displayed upon dying which will tell you exactly what you died from along with comparisons to your previous best run.
  • Increased scanner detection range for standard containers (blue squares) to 300 meters (this distance is not increased by activating WayStats).
  • Crafting an oxygen filled canister now requires 50L of oxygen from your hab reoxygenator tanks.
  • Your EVA suit can now be equipped or removed while inside a hab via the EVA preparation screen (accessible from the habitat status consoles).
  • Your EVA suit will now only be removed automatically upon entering a hab if the reoxygenator has oxygen in the tanks.
  • If the hab reoxygenator is not producing oxygen then you will now more accurately consume oxygen from the reserve tanks while not wearing your EVA suit.
  • The accumulated radiation exposure will now be saved properly.
  • The photo app should function more reliably when deleting photos.
  • The heart rate (stamina indicator) will no longer disappear while jumping.
  • Non-electrical components will no longer throw sparks when being replaced in exterior modules.

Many of these changes were prioritized based on feedback provided by players on our Feedback Forum. Help me determine future development priorities by posting your ideas, suggestions, and bug reports there. See if you can keep your spot on the new leaderboards and collect all the achievements!

EDIT: A hotfix has been applied that has fixed additional issues with oxygen and suit interactions inside of habitats.

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May 26

Balance and Comfort Update - v0.56

Today's update provides a number of user requested changes. The first of many such updates to come.

Change Log
  • There will now always be a Multitool found in Hab Beta.
  • There will now always be a Haz-Mat Kit found in Hab Gamma.
  • There will now always be a Printer Key found in Hab Gamma.
  • Survival stats like Oxygen, Battery, Calories, etc will now be depleted 20-30% slower, allowing for longer periods of exploration.
  • Habitat storage space has been expanded from a max of 60kg to 80kg.
  • Added menu option for Mouse Sensitivity.
  • Added menu options to disable Camera Bob and Sway.
  • Added menu options to control SFX and Music audio volumes.
  • Added keyboard shortcut to toggle auto-walking (~ key).

Many of these changes were prioritized based on feedback provided by players on our Feedback Forum. Help me determine future development priorities by posting your ideas, suggestions, and bug reports there. Try out these new balance and comfort updates and let me know what you think! Have fun exploring!

Additional Changes in v0.56.1
  • Added a significant amount of contextual information to the Habitat Status Screen including more descriptions of exterior module status with color coding.
  • Fixed a bug causing the Reoxygenator to use too much water to produce oxygen when the Water Reclaimer was offline.
  • Some users may not be hearing music due to a sound driver issue. Starting a new game might have caused you to get stuck in the landing pod because the music would not trigger. You should now be able to continue out of the pod even if the music does not play.
  • Datapad document lists should now scroll properly.
  • Certain controllers and flight sticks should no longer conflict with datapad keyboard commands if plugged in while playing.
  • Fixed a bug causing the game resolution to change when navigating menus.
  • Fixed a bug causing the player to fall below the terrain when exiting a habitat.
  • Distances to objectives from inside a habitat should now be properly reflected.

Additional Changes in v0.56.2
  • Fixed bug that caused discovered map location markers to appear in the wrong locations after loading a save (requires you to start a new game to fix).
  • Fixed bug that prevented you from picking up single items like found solar panels even though you had enough space in your inventory.
  • Fixed bug that allowed you to remove components from exterior modules without worrying about inventory weight.
  • You can now access the oxygen and battery transfer screen via the habitat status consoles in the airlock without exiting for an EVA.
  • Fixed a trigger that sometimes caused solar panels to come up as RTGs when clicking on them.
  • Stamina is now representing by a heart rate monitor in your HUD.
  • Fixed bug causing the photo edit menu to be hidden behind the photo view plane.
  • Added sparks to indicate when an electrical component has failed due to being installed with the module power still turned on.
  • More changes to survival balance: It now takes about 1-2 days to die from lack of both food and water (depending on activity). It now takes 2-4 days to die from lack of water alone (depending on activity). It now takes 7-9 days to die from lack of food alone (depending on activity).
  • Added text that describes the time spent while repairing module components.
  • Can no longer run with a portable solar panel equipped.
  • Carrying more than 50kg now makes you "encumbered" which prevents you from running and reduces your walking speed. You can carry up to a max of 75kg.
  • Adjusted the solar panel charging rates and adjusted the reserve power depletion rates for unpowered modules to prevent an exploit.
  • The Reoxygenator and Water Reclaimer modules now run at 10% production speed during the night to reduce the depletion rate of the reserve battery.
  • A full EVA suit battery is now equal to 1/4th of a full hab reserve battery (previously 1/2).

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“A gorgeous game of mystery and survival” - Kotaku

"I’ll happily play" - Rock Paper Shotgun

"Lacuna Passage stands out from the competition with gameplay and "realistic" environments" - Jeuxvideo.com

"A massive, convincing game world" - Red Bull

"A very realistic portrayal of what life is like on the Red Planet" - GameSkinny

"The game has captured the imagination of many space and science fiction fans" - Mashable

"There is plenty to enjoy about Lacuna Passage" - GAMR

"Pretty damn neat" - Select Button

"The landscapes are magnificent" - Game-Guide

"The game's music is completely off the hook" - Cinema Blend

"They’ve captured the vibe of Mars very well" - Tech Raptor

About This Game

You wake in an landing pod, check your equipment, and venture out onto the red Martian soil in search of a nearby habitat. With 25 square miles of the Red Planet to explore and survive, you must gather resources from randomized points-of-interest, supply caches, and other habitats in order to continue your mission. But survival is more than just tracking status bars. Maintaining your life-support equipment is just as important as maintaining your health. Lacuna Passage’s Survival Sandbox will allow you to test drive the core game mechanics in Steam Early Access ahead of the upcoming Story Mode.

Explore a massive terrain generated from actual Mars satellite imagery. With features generated from scans collected by the HiRISE project and details painstakingly designed to reflect the photography captured by planetary rovers, this is as close as you can get to visiting the true Red Planet.

Survive the harsh Martian environment with mechanics based on real health metrics like blood glucose levels, heart rate, caloric intake, and more. You will feel like a true interplanetary pioneer as you conquer the elements.

Capture the beauty of Mars with an in-game photography mechanic that allows you to document your discoveries. Photos are saved to your computer at full 1920x1080 resolution and can be referenced in-game where you can set objective points to navigate back to where the photos were taken.

Interact with the various astronaut technologies through your dependable datapad. You will need to manage inventories, salvage and craft supplies, and repair vital life support systems in order to survive the desolate landscapes of Mars.

System Requirements

Mac OS X
    • OS: Windows 7/8.1/10
    • Processor: Intel Core i3
    • Memory: 2 GB RAM
    • Graphics: nVidia GTX 480, AMD Radeon 7870
    • Storage: 5 GB available space
    • OS: OSX (64 bit versions)
    • Processor: 2 GHz Equivalent CPU
    • Memory: 4 GB RAM
    • Graphics: OpenGL 3 Compatible GPU
    • Storage: 5 GB available space
Customer reviews Learn More
Mixed (19 reviews)
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