NEW HELL WEEK UPDATE - Interstellar Marines resurrects the old school tactical FPS, offering a unique blend of co-op, role-playing*, and nonlinear gameplay. Play co-op or multiplayer on servers around the world.
User reviews: Mostly Positive (5,771 reviews)
Release Date: Jul 2, 2013

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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?

“We have this crazy idea that an independent game developer can develop something the size and quality of a AAA game, by having the community take the role of publisher. We call this concept AAA-Indie. This gives players the game they want, instead of the game a greedy publisher wants them to have. We know Interstellar Marines is going to take a long time to make, after all we’re making a AAA game without the size or resources of a AAA studio. So rather than toiling away behind closed doors we want to spend this time with you, the player, and share the experience all the way from pre-alpha to the release version.”

Approximately how long will this game be in Early Access?

“This is for the love of the game, not the money. We'll be in Early Access until we have delivered our ambitious vision or Valve decides to shut down Early Access. So... a long friggin time.”

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

“Spearhead and Frontliner Editions will only be available in Early Access for those brave enough to support our quest to create a AAA-Indie game! For the full version we plan on having a Regular and Deluxe Edition. As far as features our plans for the full version include:

  • First Person Simulation
    A razor-sharp focus on creating a truly immersive First Person Simulator via distinct graphics, audio, and gameplay.
  • Tactical Co-op
    The entire game experience designed from the ground up to support up to 4 players in co-op, with true cooperative interaction.
  • Progressive Role-Playing
    Flat and classless progressive character development and skill system that is not dumbed down for consoles.
  • Nonlinear Game Design
    Open and dynamic game world that always presents a multitude of tactical options for navigating the environment.
  • Customizable Arsenal
    A comprehensive selection of weapon models and types, extension upgrades and equipment options, allowing on-the-fly choice in each tactical situation.
  • Thinking AI
    Enemies that react to input from you and the surrounding game world. We would rather have one smart enemy than five stupid ones.
  • Believable Science Fiction
    Realistic and rich sci-fi environments, ranging from claustrophobic space stations to large outdoor worlds.
  • Interactive Storyline
    A cinematic narrative centered around first contact with another sentient species, where your choices and actions will have consequences.

The full version will be more SP/Co-op focused than the current Early Access version where we are implementing and testing new mechanics primarily in a PvP multiplayer environment.”

What is the current state of the Early Access version?

“The game is in pre-alpha and players can expect to experience bugs, missing features, incomplete content, and some game breaking issues. Still, we have a couple community members with over a thousand hours in-game, and many with hundreds of hours. In the portion of the game currently available you are training in a top secret facility 2km beneath Groom Lake Nevada. These are the features you can experience right now:

  • Hell Week Event
  • 2 SP/Co-op Campaign Missions*
  • 4 Difficulty Levels
  • 5 Challenge Missions
  • 9 Multiplayer Maps
  • Dynamic Environment Effects
  • 3 PvP Game Modes
  • 100% Dynamic Lighting
  • Destructible Light Fixtures
  • Full-body Character Simulation
  • Visor Affected by Fog, Dust, and Rain
  • Spectator Mode
  • Movie Mode
  • Playground Mode
  • 3 weapons**
  • Tactical Laser
  • Tactical Flashlight
  • Ragdoll Physics
  • 28 Steam Achievements
  • Dedicated Servers Worldwide
*(Currently available as stand-alone missions)
**(pistol currently uses placeholder model)

We have a small but active multiplayer community. Look HERE to see when the most people will be on for you to play with, it is usually during the evenings in North America and Europe. There is also a budding esports scene at that we sponsor.”

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

“We intend for the price to follow the value of the game. Expect it to gradually rise as we ship new content, but we may need to lower the price on rare occasions to correct for market conditions.”

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

“The community can follow our progress on the Trello Board and vote for features they want to see. They will also be able to report and track bugs once we choose a bug tracking software. Players can also interact with the developers on the forums, in bi-weekly community get-togethers on our TeamSpeak Server, and at hosted esports events as soon as game features support it.”
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Buy Interstellar Marines

Early Access to Interstellar Marines, including all future updates and expansions.

Buy Interstellar Marines - Spearhead Edition

Early Access to Interstellar Marines including all future updates and expansions + Join the Spearhead unit (unique honorary game profile) + Your username in the Hall of Honor and your name in the credits of the game + Digital download of the Interstellar Marines: The Beginning soundtrack and all future soundtracks + Digital download of art book when it’s ready + Get 1 extra Interstellar Marines Steam Key to gift to a friend.

Buy Interstellar Marines 4-Pack

Get one copy for yourself and give the other three to friends!

Buy Interstellar Marines - Upgrade to Spearhead Edition

Interstellar Marines - Spearhead Edition Upgrade


Recommended By Curators

"Nice Early Access First person tactical shooter game with more to come. Solid game; Campaign, Co-op, Multi-player with lots of fun and things to do."
Read the full review here.

Recent updates View all (32)

August 5

Lets Play Interstellar Marines: Hell Week Event

We’ve recently launched Hell Week, a hunger games/battle royale style multiplayer game mode for our Early Access game Interstellar Marines and want to share the fun with everyone!

On Sunday August 23 at 8:00 PM UTC we are filling our Hell Week servers with Let’s Players and Streamers! The winner will be immortalised with an in-game statue bearing their name, and also receive 10 game keys to give out to their audience!

So please spam the internet... er… we mean share this... to make sure your favorite YouTube and Twitch Let’s Players can be in this event and you can watch them pwn, or get rekt!

Sign up details

There are only 64 spots available so if you have a YouTube or Twitch channel and would like to participate please email before August 16th and if you get a spot we’ll send you the information!

Make sure the email address you contact us with matches one published on your Twitch or YouTube page to verify your identity, and please include in your email:
  • A link to your Channel
  • If you already own Interstellar Marines
  • Any additional notes or comments

Your team at Zero Point Software

34 comments Read more

July 24

Update 20: Unity 5 Upgrade

We now have the game running in Unity 5, allowing improved performance and visuals. Nucleus is now back for COOP play, and we were able to include the Linux version in this update. (We thought it would be delayed earlier if you didn’t know.)

For Update 20, we listened to your feedback about two things people really wanted: Improved performance and fixing Nucleus so to play with your friends in coop. We’ll be continuously listening to you in the forums, social media, and on our Trello page.

The next step we want to do is improve performance even more with Speedtree and boost the graphics even more with physically based shaders, global illumination, linear lighting and deferred rendering 2.0.

Your Team at Zero Point Software

What's New

ADDED: Updated code base to Unity 5 from Unity 4
ADDED: OSM are now the number 1 clan after winning season 1 of the competitive league

UPDATED: Nucleus map has been fixed, and coop servers are up
UPDATED: Enlisted profile name has been changed to Frontlinter
UPDATED: Hell Week main menu button moved to below multiplayer button


FIXED: "Linux players can join password protected servers"
FIXED: "Dropped backpacks are now properly destroyed between Hell Week games"
FIXED: "Crates from earlier Hell Week games are now properly destroyed between games"

Known Issues

**SPECIAL NOTE** This update contains the upgrade from Unity 4 to Unity 5. We have fixed most of the bugs, and need your help to find any more. Please let us know of any bugs you find via our support email: Thank you!
  • The mission overview is currently a place-holder, and will be completed in a later update
  • When viewed up-close, some CTR heads may increase in size
  • Rag doll physics, and CTR dismemberment on death, need fine tuning
  • Water and some vegetation are not affected by fog, which can lead to them looking black from a distance
  • When looking down, snow particles may disappear
  • Hell Week combat points are currently not recorded in Steam leaderboards
  • Some crates may require several attempts to open
  • Players may sometimes fall through the floor of a map
  • VOIP does not work on coop
  • Game may temporarily freeze when players join the server
  • Players joining within a few seconds of a Hell Week starting may get an error that they cannot join. This is due to out-of-sync clocks. Please wait a few seconds and rejoin
  • Some new achievements and TP rewards may not work. We're investigating
  • The HUD names and kill messages will be clipped on aspect ratios that are less wide than 16:10
  • The game will stop updating when switching out of fullscreen in Windows. If you are on a moving elevator or platform, this will cause you to fall through it
  • View jittering may occur when jumping on lossy networks
  • Audio may cut off partially/completely on weapon/helmet sounds
  • Other players will seem to float above or interpenetrate while standing on a moving dynamic platforms (network smoothing will exaggerate this effect)
  • When joining an in-progress The NeuroGen Incident game, additional waypoints may be visible
  • Player may sometimes spawn with no ammo in one or both weapons. Reloading fixes this

37 comments Read more
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Report bugs and leave feedback for this game on the discussion boards

Interstellar Marines

Frontliner Edition is an Early Access exclusive. Your Purchase includes:

  • Early Access – be part of the development of Interstellar Marines and provide your feedback and suggestions as we expand the game update after update.
  • Frontliner identity - An early access exclusive profile on our site and in Interstellar Marines.*
  • Upgradable - No need to re-buy, you can own Spearhead Edition with a simple upgrade.
  • All In – receive all future updates and expansions completely free of charge.
*Not available yet

Interstellar Marines - Spearhead Edition

Spearhead Edition is an Early Access exclusive. In addition to Early Access to Interstellar Marines (including all future updates and expansions), the Spearhead Edition includes:

  • Spearhead identity – A unique honorary game profile that with time will grant you access to special skins, helmets, and weapons. (does not alter gameplay).*
  • Hall of Honor & Credits – Your name will be acknowledged in a special in-game Hall of Honor and you’ll also get your name in the credits.*
  • Digital Soundtracks – Download the Interstellar Marines: The Beginning soundtrack as well as all future soundtracks as they are released.
  • Extra Steam Key – You’ll receive an additional copy of Interstellar Marines to trade or gift to a friend.
  • Access to Beta Builds of New Updates – Occasionally Spearhead owners receive access to early beta builds of new updates before they're released publicly, allowing you to experience new content in advance!
  • Digital Art Books – Download digital PDFs released periodically, filled with high resolution concept art, screenshots and behind the scenes information.*
  • Digital Concept Art – You’ll receive early copies of concept art and other images in a special Spearhead folder on your hard drive.
*Not available yet

Steam Greenlight

Making The Game

We'll be posting development progress on our Trello board, allowing you to see what we're working on and give some input on what we're doing and what you'd like to see.

About This Game

Interstellar Marines resurrects the old school tactical FPS, offering a unique blend of co-op, role-playing*, and non-linear gameplay. Set in a believable future, you take on the role of an elite operative handpicked to join Project IM, a top secret military program being assembled to protect mankind from all dangers outside our solar system.

Interstellar Marines is inspired by movies such as Aliens, Starship Troopers and Final Fantasy; and games such as Half-Life, System Shock 2, and Rainbow Six 3: Raven Shield. Interstellar Marines is all about evolving the FPS recipe with all the inspirations we've assimilated since the birth of the genre. Our goal is an evolutionary leap forward driven by our compulsive interest in science fiction, role-playing, military realism, and respect for first person immersion.

*role-playing not yet implemented

Welcome to Project: IM

Since man first raised his head to the stars above, he has dreamed of conquering space. Interstellar Marines is the age old dream come true. It is the dawn of the 22nd century, a time of great hopes and expectations. The discovery of a new and inexhaustible well of power known as Zero Point Energy has revolutionized space travel. Man has escaped the confines of Mother Earth, and gone on to colonize the solar system.

But far away from public awareness an ambitious military project has already taken Man beyond the final frontier, and into the regions of the stars. The powerful Interplanetary Treaty Organization, ITO, is secretly constructing the first human settlement in another star system. You are a new member of the Interstellar Marines, a secret battalion within the ITO special forces created to protect humanity against potential threats from the confines of the unknown universe.

Now gear up Marine, we’ve got training to do! Welcome to Project IM.

New Hell Week Event

Featuring 9 New and unique areas where 64 players battle until only 4 are left standing! This event runs every 3 hours in each timezone, so there’s always one somewhere in the world starting at the top of every hour. We also have a Steam Leaderboard for Hell Week here which tracks Combat Points globally, monthly, and survivors of Hell Week. We'll let you know more about Hell Week Finals when it’s ready.

7 Singleplayer/Co-op Missions

Play 5 co-op and single-player missions against unscripted AI with dynamic environment effects or two pivotal missions inside the Interstellar Marines universe, The NeuroGen Incident and Assault on Starcrown Aerospace. Play singleplayer or co-op with up to three friends in intense action with more co-op and singleplayer missions to come!

9 Unique Multiplayer Maps Across 3 Game Modes

Take your friends out in Deadlock, Deathmatch, and Team Deathmatch on maps featuring dynamic environment effects such as time of day, rain, thunder and lightning, emergency lighting, fire alarms, moving platforms etc.

Realistic Simulation

With a physics-based dynamic character controller there are no floating hands, and you can even see your feet! The physically present combat helmet has a HUD projected onto the visor and is affected by dust, rain, fogging, and damage. Aim down the sight for the long shots and use the tactical laser to assist aim when hip firing, as there are no artificial crosshairs to break immersion. Use the intuitive crouch and cover system; spacebar (default) peeks over cover, and looking down leans you forward to see over ledges. You can also shoot out the lights and prowl in darkness, or use the tactical flashlight if you’re afraid of the dark.

We hope you enjoy the game, and look forward to developing it with you as we progress through Early Access!

Your team at Zero Point Software

System Requirements

Mac OS X
SteamOS + Linux
    • OS:Windows XP SP3 or Windows Vista
    • Processor:2.4 GHz Dual Core
    • Memory:2 GB GB RAM
    • Graphics:Nvidia Geforce 8800 GT / ATI Radeon HD 4770
    • DirectX®:9.0c
    • Hard Drive:3 GB HD space
    • Sound:DirectX 9.0c Compatible
    *1 map, Neurogen Incident, temporarily requires 64-bit OS and 4 GB RAM until it is optimized
    • OS:Win 7 or later
    • Processor:2.4 GHz Quad Core
    • Memory:4 GB GB RAM
    • Graphics:Nvidia Geforce GTX 280 / ATI Radeon HD 5830
    • DirectX®:9.0c
    • Hard Drive:3 GB HD space
    • Sound:DirectX 9.0c Compatible
    • Other Requirements:Broadband Internet connection
    *1 map, Neurogen Incident, temporarily requires 64-bit OS and 4 GB RAM until it is optimized
    • OS:10.7.5 (Lion)
    • Processor:2.2 GHz Intel Core 2 Duo
    • Memory:2 GB RAM
    • Graphics:Nvidia Geforce 8800 / ATI Radeon HD 3850
    • Hard Drive:3 GB HD space
    *1 map, Neurogen Incident, temporarily requires 64-bit OS and 4 GB RAM until it is optimized
    • OS:10.8.2 (Mountain Lion)
    • Processor:2.4 GHz Intel Quad Core
    • Memory:4 GB RAM
    • Graphics:Nvidia Geforce GT 120 / ATI Radeon HD 4870
    • Hard Drive:3 GB HD space
    • Other Requirements:Broadband Internet connection
    *1 map, Neurogen Incident, temporarily requires 64-bit OS and 4 GB RAM until it is optimized
    • OS:Linux
    • Processor:2.4 GHz Dual Core
    • Memory:2 GB GB RAM
    • Graphics:Nvidia Geforce 8800 GT / ATI Radeon HD 4770
    • Hard Drive:3 GB HD space
    *1 map, Neurogen Incident, temporarily requires 64-bit OS and 4 GB RAM until it is optimized
    • OS:Latest version of Ubuntu (14.04)
    • Processor:2.4 GHz Quad Core
    • Memory:4 GB GB RAM
    • Graphics:Nvidia Geforce GTX 280 / ATI Radeon HD 5830
    • Hard Drive:3 GB HD space
    • Other Requirements:Broadband Internet connection
    *1 map, Neurogen Incident, temporarily requires 64-bit OS and 4 GB RAM until it is optimized
Helpful customer reviews
51 of 67 people (76%) found this review helpful
1 person found this review funny
1,235.4 hrs on record
Posted: August 8
Early Access Review
Written on 08/08/2015

I previously wrote a lengthy review as to why I wouldn't recommend this game any more (I had a Recommended review up before that which I didn't take down for a good while after I couldn't really recommend it any more), except Steam didn't want me to post it even after hacking massive chunks out of it to make it under the supposed character limit for Steam reviews that I found mentioned somewhere after googling it (many people write reviews over that count so it can't be right) and planning to paste those sections in the comments. I didn't feel I could remove any more and still have the main points in the actual review and covered well enough to say most of what I wanted to say, so I decided to leave it for the time being. I might upload it elsewhere and link it here at some point.

In essence, I'd stated that while I wouldn't recommend it any more for multiple reasons, it was still a game people could potentially enjoy at least for a while before coming to the same conclusion as me and no longer enjoying / recommending it, and also a game that people could possibly be happy with from purchase up until it's completion (if it's completed). They focus too much on adding things and too little on keeping what they already have in a playable / enjoyable state. Too much on drawing people in with additions to make it look like they're making progress and too little on fixing the ever increasing number of bugs and making sure those additions are in a good enough state to feel like they add to the game, rather than detract from enjoyment. Too much on drawing in new players and too little on retaining those they already have.

Now I feel I would not recommend it in the slightest, not even to those who look at the store page and recent gameplay and think “this looks like my sort of game!” because I don't know what the heck the devs are doing but I don't care for it.

I have the following to keep things short (at least in this review..), however, to see some of my reasons for not recommending this game there'll be a fair bit of reading involved, and I can't guarantee that by the time you check these links out the threads won't be deleted. Just know that despite my hours I would most definitely no longer recommend this game.

The two previous (now locked) threads: - The original and first to be locked. - The second and second to be locked. The community manager handed over the discussion moderation to the other community manager. In the same hour after this, a community manager (pretty sure I know who) banned Domina permanently from the Interstellar Marines discussions with no reason stated after they had spoken out about the worrisome mishandling of the community.
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56 of 76 people (74%) found this review helpful
1 person found this review funny
3.5 hrs on record
Posted: August 8
Early Access Review
Time goes by, interstellar war stays the same. That is - a bunch of grey halls with grey buildings and occasional light sources, filled by a bunch of grey people in grey suits of armor wielding grey guns. At night.

I first bought the game when it was nothing but a single boot camp map with lighting and weather effects that you could toggle. Two years later it's mostly that but the lights and weather are out of your control - it's always night and occasionally it rains.

There's a multiplayer component, but it's all "basic boot camp" styled with everyone wearing the same armor (that does not protect you) and using the same three guns which are neither precise nor different from each other.

And as a whole the game feels deliberately clunky. Your helmet's faceplate is literally stained with grease and fingerprints and whites out shen shone directly upon. You can lift it, but you lose the HUD (it's admirably realistic, but what the actual joy). Your soldier runs out of breath BY WALKING. Walk for 30 seconds (or run for 10) and there you go - exhausted, can't aim at all. As for audio - extremely loud footsteps and actual tinnitus. It's a very realistic fat dude with a toy gun simulator, for all it's worth.

I would have recommended it over a year ago when it had actual promise. But now... Not really. This ship has sailed and sunk.
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41 of 67 people (61%) found this review helpful
1 person found this review funny
3.4 hrs on record
Posted: August 8
Early Access Review
Wanted to be HalfLife/RainbowSix
Ends up being Takedown Red Sabre

5 years or so in development for somehthing every noob could put together in 1 day with Unreal Engine.

There's no content. That still has to be made and then fixed... so another 5 years. Not gonna happen.
Was this review helpful? Yes No Funny
18 of 25 people (72%) found this review helpful
2 people found this review funny
4.2 hrs on record
Posted: August 3
Early Access Review
I paid $15 for this game over 2 years ago. I understand it was early access and I understand what that means. I regularly Alpha and Beta test games, so I expect glitches and such. But, THIS GAME?! Hell, it doesn't even have controller support yet! Over 2 years people! TWO YEARS! The updates are mostly a joke. Nothing worthwhile ever gets truly fixed. It just seems like the "creators" (and I use that term loosely) are more concerned about getting cash than they are about making this game work. TWO YEARS! And then some! WTF?!?! I'd rather have my 15 bucks than this crap. If only there was a refund option! Anyway, I HIGHLY reccomend you DON'T BUY THIS GAME. The developers seem to have no vested intrest in completing it. They only seem to want your MONEY!
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25 of 38 people (66%) found this review helpful
1 person found this review funny
0.3 hrs on record
Posted: August 9
Early Access Review
There are already plenty of reviews out there talking about the game itself. Some would argue for a review that is all that matters. However for an Early Access title that has been in development for who knows how long, the developers are also on equal grounds to be judged. Perhaps things will get better in time, but as of right now Zero Point Software is not a developer I will support any longer. The way they have treated this community lately has been nothing but disgraceful and disrespectful. The video they released is thankfully being taken down, but that will never fix any issues regarding their treatment of the community. Here is a link to a thread from Reddit, which explains everything. I will also link the third thread regarding the subject that was created by me, since the other two threads were locked.

ZPS's treatment of the community has been nothing but locking threads, making constant threats, permantley banning users, and not even hinting that they are taking anything I or any other member have put forward regarding not only the video but the treatment of their paying customers. They clearly don't care about feedback, and they clearly don't have the foresight or basic common sense to think about their actions before they make them. I tried to be as civil and respectful as possible, and they have yet to answer the points and reasoning I put forth explaining why members were upset, and why the video was not a good idea to begin with. I will never get a response, and it is also clear they could care less. Until this developer proves it can be mature and understanding, you should not entrust them with completing a game such as this. The image for Interstellar Marines was a beautiful one, and after all these years they have barely anything to show for it, aside from their harrassment of customers who bought their game out of support and trust. They have lost my support and have broken everyone's trust. Maybe when they begin to take some responsibility for their actions there could be hope, but I am doubtful and will no longer try to provide feedback. They had their chance to prove themselves apart from the usual EA dev. They failed not only themselves, but their community. As such I can not recommend the game for the shape it's currently in, or the prospect that it will ever be what it could have been.
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