UPDATE 24 AVAILABLE - 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: Mixed (6,322 reviews) - 68% of the 6,322 user reviews for this game are positive.
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 www.phyregaming.com 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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Early Access to Interstellar Marines, including all future updates and expansions.

Buy Interstellar Marines 4-Pack

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

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.

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Recent updates View all (37)

December 18, 2015

Update 24: Merry XMayhem



This update brings some new features, some returning content, and fixes. The Annual XMayhem mode has returned once again with the special achievements unlockable only during the event. We also have a brand new map created by Auxsiren that’s a complete overhaul of Evacuation (Evac 1 will still be playable in the map pool). There are also now special camos for CTRs that you can see specifically per map, this is a big step to add in player skins. Included as well is a new party system included to help you team up with your friends, chat with them, and more. Finally there are fixes for bugs as well as the crashes from last update.

From all of us here at Zero Point Software, we’d like to thank you for supporting the game and we wish you a Merry Christmas and a Happy New Year!

FOR THE LOVE OF THE GAME,
Your Team at Zero Point Software

What's New

ADDED: Winter XMayhem Game Mode on Mainline Winter
ADDED: New Evacuation 2 map to multiplayer
ADDED: Ability to add variable skins to CTRs. This is a major step to in-game player skins
ADDED: Nine CTR skins. CTRs now have map-specific skins, with many of them camouflaged
ADDED: Party system to team up with friends, audio/visual invite notifications, chat room + additional features
ADDED: Inviting friends into a Hell Week game will spawn them close to you in the same zone, and in your team
ADDED: Chat system to menu view when in-game (press ESC to access)
ADDED: Kill confirmed and Zone captured messages are stacked on top of each other
ADDED: Mission successful +XP message when completing a single player/coop/multiplayer mission/match
ADDED: Revive successful message when player is revived
ADDED: Warning messages for low health, team kill warning and revive needed
ADDED: Variable delay to TP popup messages

Improvements

UPDATED: The NeuroGen Incident with new spawn points for players joining mid-game. Joining during end game will place joining player as a spectator
UPDATED: Nucleus with additional check point spawns for players joining mid-game
UPDATED: Chat system with Spearhead, Best Clan, Dev icons, UI improvements, message notification improvements, button to open/close etc
UPDATED: Clicking a player name in chat will bring up the Steam overlay with their profile (need Steam overlay enabled to work)
UPDATED: In Hell Week, when players up for elimination have the same score, decision of who to eliminate is random rather than player-name based
UPDATED: XMayhem game mode to be compatible with the new additions from 2015
UPDATED: T-IM101 has 8 x health, and does 4 x damage, compared to regular Marine
UPDATED: Xmayhem gift announcer loop
UPDATED: If a revive is halted, player's bleedout timer is set to percentage of revive completed, if higher than bleedout timer
UPDATED: In Hell Week, if a player is eliminated by any means other than the elimination timer, bleedout timer is reset
UPDATED: Nucleus elevator with all onboard elevator trigger to prevent players being stuck, and grid to stop players falling off
UPDATED: Nucleus with cull groups, rather than disabling the sub level, when player reaches top level
UPDATED: Hit markers are accurate to the hit location
UPDATED: UI icons scale according to resolution instead of being a fixed size
UPDATED: UI icons counter-scale when zooming in
UPDATED: Changed neutral zone colour to be more visible, and best team colour to be light purple
UPDATED: Match Completed +XP shown at the end of a match, Match Won +XP shown for the winners
UPDATED: End of game horn + win/lose music play at end of Team Domination and Team Deathmatch games
UPDATED: Hell Week shows Survived Hell Week +XP message for surviving players at game end
UPDATED: Revive TP score is 25XP
UPDATED: Size of Team Domination corners increased for greater visibility
UPDATED: Deadlock capture zones have different capture/finishing beeps for clarity
UPDATED: Resort map with cull groups and new nav mesh
UPDATED: Multiplayer thumbnail in main menu for some Christmas cheer!
UPDATED: Browser ping and quick join systems temporarily removed
UPDATED: Supply crate icons updated and improved

Fixes

FIXED: "Crashing to desktop with no error log"
FIXED: "Negative HW score when collecting CPs just as the game ends"
FIXED: "Resetting of items in a Hell Week server now occurs correctly"
FIXED: "Map settings for correct ahievement progress on Colony, Nucleus and Operations"
FIXED: "Treasure Hunter and Fort Knox achievements"
FIXED: "Late-joining players seeing already-used waypoints"
FIXED: "Team scores in TDOM/TDM showing in wrong colour/wrong position"
FIXED: "Disconnected players no longer shown as connected in Mission Overview when moving to another zone"
FIXED: "Player icons randomly flashing on screen when player is joining"
FIXED: "Kill confirmed icons show when enemies kill each other"
FIXED: "Screen flashing white when entering a match"
FIXED: "Press space to spawn is no longer displayed when a player has been eliminated in Hell Week"
FIXED: "Reviving a player pauses the bleed out time"
FIXED: "Spectator mode correctly shows players, kill markers and zones"
FIXED: "Removed HUD instantiation from dedicated servers"
FIXED: "Two Deathmatch spawns in Mainline Winter"
FIXED: "Chat correctly scrolls to bottom when Player Joined Server, and You Have An Invitation messages are added"
FIXED: "Light handler issue, which caused the light handler intensity contribution to be overridden"
FIXED: "Nav mesh in Operations - Survival A"

Known Issues

The Welcome Tutorial achievement is not working (due to an incorrect setting in the map)
The gamepad implementation is early and experimental, so may cause issues
When viewed up-close, some CTR heads may increase in size
Some vegetation appears to have black edges
The number of players in the Friends Lobby may not update until the lobby tab is clicked on
Players may sometimes fall through the floor of a map
Standing in a doorway when the door closes may result in the player being pushed vertically
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. If you are in a Party, this will disconnect you from the Party
View jittering may occur when jumping on lossy networks
Other players will seem to float above or interpenetrate while standing on a moving dynamic platforms (network smoothing will exaggerate this effect)
Player may sometimes spawn with no ammo in one or both weapons. Reloading fixes this

34 comments Read more

November 11, 2015

Update 23: Hotfix 1


We now have a big hotfix ready for you guys. We heard all your feedback, bug reports, and are tackling the biggest issues of this update. Below is the changelog and we’ll be monitoring how the update is faring. There are still some issues we’re working hard on fixing like the random crashes and the occasionally clipping through the world. Those two issues are top priority for us and we’ll be trying to crack down on these specifically.

Thank you all for patiently waiting and we hope you enjoy it!

FOR THE LOVE OF THE GAME,
Your team at Zero Point Software

Update 23 Hotfix 1
Version: 0.5.23
Released: 11th November, 2015

What's New
ADDED: Last 20 messages and message of the day to global chat
ADDED: Join button to global chat. When a player joins a server, a blue join button appears in the chat. Client-side only, and limited to max 3 at a time
ADDED: On/off button for XBOX controller added to menu settings
ADDED: Run/walk when strafing with an XBOX controller
ADDED: Chat log to global chat

Improvements
UPDATED: Industrial Hell Week map with restrictions to roof access
UPDATED: Weapons handling updated and tweaked
UPDATED: Removed CTR killed messages from Hell Week
UPDATED: Player colour in global chat to match in-game chat colour

Fixes
FIXED: "Steam leaderboards not updating"
FIXED: "Steam achievements not working"
FIXED: "New steam achievements"
FIXED: "Back packs not being correctly removed in Hell Week"
FIXED: "All aboard trigger not working in several coop missions when a player leaves the server when dead but not bled out"
FIXED: "Framerate drops caused by CTRs going into a loop which caused them to attempt to rotate at an infinite speed"
FIXED: "Assault on Starcrown Aerospace"
FIXED: "Excessively large servers logs which could cause server crashes"
FIXED: "Negative player scores in Hell Week"
FIXED: "Several HUD elements not visible in different resolutions"
FIXED: "Capturing a zone audio notification only audible when looking at the centre of the zone"
FIXED: "Max chat server clients set too low"
FIXED: "Chat server requesting unavailable RPC from client"
FIXED: "Audio notifications when firing at a friendly or enemy"
FIXED: "Number keys not switching weapons when XBOX controller plugged in"
FIXED: "Zoom not working correctly when XBOX controller plugged in"
FIXED: "Stuck in bleed out"
FIXED: "Randomly moving between players when spectating when dead in multiplayer. NOTE: this is untested"

26 comments Read more
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About This Game

UPDATE 24 AVAILABLE - 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!

FOR THE LOVE OF THE GAME,
Your team at Zero Point Software

System Requirements

Windows
Mac OS X
SteamOS + Linux
    Minimum:
    • 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
    Recommended:
    • 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
    Minimum:
    • 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
    Recommended:
    • 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
    Minimum:
    • 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
    Recommended:
    • 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
104 of 126 people (83%) found this review helpful
20 people found this review funny
2.6 hrs on record
Posted: January 21
Early Access Review
Every six months or so I come to this game's store page with the following question in mind:

"Is it finished yet?"

I've been doing this for years now.
Was this review helpful? Yes No Funny
23 of 31 people (74%) found this review helpful
1 person found this review funny
8.9 hrs on record
Posted: January 16
Early Access Review
This review is coming from someone that followed the kickstarter of this game, and was incredibly excited to see it on steam.
The moment the game came out on steam I bought it. My expectations were low, seeing as it was early access, and I was unsuprised at how little content there was.
When I first saw the game, and when I bought it, I was hooked on how strongly they advertised an emmersive coop experience. The space sharks, the atmosphere, the whole thing looked like the coop shooter kind of experience I'd been looking for in other games, with a PvP gamemode tacked on for fun.
Updates were slow, but I tolderated it. Small team, small funding, right?
Updates continued to crawl along, with more content than ever.
So why am I not recommending the game?
Well the devs seem to have forgoten what they advertised the meat of this game being: a coop game.
They continually realise PvP maps, PvP gamemodes, and other PvP specific features.
There are currently two Coop maps. Both are a lot of fun, they both feel incredibly lacking in parts, but still fun.
However, theres been two maps for almost half a year now.
Maybe if they add actual coop features, I'll change my review, but as of now I'm incredibly dissapointed.
Don't buy this game unless youre a fan of dissapointment.
Was this review helpful? Yes No Funny
33 of 54 people (61%) found this review helpful
2 people found this review funny
356.8 hrs on record
Posted: January 27
Early Access Review
Interstellar Marines is one of the best old school tactical FPS games i've played.
A wonderful dark SCI-FI world and a realistic combat system.
It's still Early Access and a small Team's working on but since the beginning i enjoyed more than 350 hours of gameplay.
You can play 2 big maps in Singleplayer or 4-Player Coop: Starcrown Aerospace (infiltrate a fortress on a planet) and the Neurogen Incident (big cargo environment and science labs in space).
3 types of Challenges: Survival, Elimination or Escape you can play alone or in Coop.
And the PVP mode Deadlock with a few maps for example Dynacore, Stronghold and Evacuation where you have to take points and hold'em as team. A round end's, after your team took all points or eliminated the whole opposing team. Every week there are community gatherings for EU and US where you can play with Dev's and IM-Progamer from different clans, to have a nice talk in the chat or in teamspeak. At christmas they add a funny Terminator PVP mode where one player is totally overpowered with a special-damage weapon and armour so you have to take the T-IM101 down as team or you die several times :)
And the great Hellweek PVP Arena within 8 completely different maps (on the moon surface, in the jungle, mountains, wetlands, industrial environment and more) where you have to fight against bots and other players or groups, collect weapons, points and marked air drops. You can play alone or teamup with other players in hellweek, but after a half hour the team or player with the highest points will win and the round is over ,then you have to wait one hour until the next hellweek starts. The enemys in Interstellar Marines are two kind of robots, a runner (weapon: fist) and a gunner. But there will come more, i wait hard for the alien race: the landsharks. Your equipment: 3 different weapons: SMG, AR and a pistol all with flashlight, laser and silencer (pistol without silencer) i hope a shotgun and something like a knife will come too also more types of enemys and a few animals in the environment would be perfect for the atmosphere i guess (jumpscares). But what i really love in IM ... the atmosphere, the day/night cyclus and changing weather, exhaustion system... unique. The price is definitely worth it.
If i have one word for Interstellar marines: Intense.
Was this review helpful? Yes No Funny
18 of 28 people (64%) found this review helpful
8 people found this review funny
1.8 hrs on record
Posted: January 19
Early Access Review
For the Love of the Game my ♥♥♥...

- NO landsharks...
- NO AAA quality - what did they try to tell us selling their game as AAA Indie title? Like all other Indie games are BBB or CCC? Whatever...
- NO landsharks...

BUT! You can putt off/on your helmet - real AAA feature here, lads.

Go grabt it now and see how awesome it is to run around in futuristic helmet which you can put on and off your face!

Was this review helpful? Yes No Funny
13 of 19 people (68%) found this review helpful
20.4 hrs on record
Posted: January 16
Early Access Review
Don't buy this game until the developer situation is sorted out and sufficient new content has been added. As it stands, many developers have left the team, and very little co-op (or any) content has been added in the past year+.

The community is pretty dead, and it's hard to find good servers. This game seems like a sinking ship, though I loved playing it when I first bought it and still think it really has potential.
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