-52%

£8.64 £4.16

Steam Key

(Global) – Will work in US

Instant Delivery

Interstellar Marines Steam CD Key

Name: Interstellar Marines Steam CD Key | Keydra
SKU: kinguin-4612
Price: 4.16 GBP
Availability: InStock

Steam Key

(Global) – Will work in US

Instant Delivery

-52%

£8.64

MSRP is based on publicly available data and estimates.
May not reflect actual retail price. Please verify independently.

£4.16

In Stock – Limited Quantity

Interstellar Marines Steam CD Key

In Stock – Limited Quantity

£8.64

MSRP is based on publicly available data and estimates.
May not reflect actual retail price. Please verify independently.

£4.16

Description

Purchase Interstellar Marines and receive the following: Early Access – be part of the development of Interstellar Marines and provide your feedback and suggestions as we expand the game update after update. All In – receive all future updates and expansions completely free of charge. Interstellar Marines resurrects the old school tactical FPS, offering a unique blend of co-op, role-playing and nonlinear gameplay. Set in a believable future, you take on the role as an elite soldier 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 Half-Life, System Shock 2 and Rainbow Six 3: Raven Shield. Our game 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 Features Features Currently Available Team Deathmatch (4vs4) in highly dynamic environments. 5 unique maps featuring dynamic environment configurations such as time of day, rain, thunder and lightning, emergency lighting, fire alarms etc. Experience various maps and prototypes in “Playground” mode (singleplayer). 100% dynamic lighting and real-time shadows as well as destructible light fixtures. Full-body first person character simulation (no more floating hands!). Physically present combat helmet (visor glass is affected by light and rain). Submachine Gun (CE6) with full-auto fire. Shoot from hip or look through the Red Dot scope for increased accuracy. Toggleable tactical flashlight for when it’s pitch black. Toggleable laser to assist your aim (no crosshairs) Smooth network play even on high latency connections with packet loss. Realistically simulated ragdolls with momentum transfer. Play on high capacity dedicated servers in both US, Europe and Australia. World’s most advanced in-game chat system. Vision of Interstellar Marines 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 thinking 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.

System Requirements

Windows

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

Mac

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

Linux

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

Activation

Product Activation Guides

This product will be delivered as a Steam Key

1

Launch Steam & Sign In

Open the Steam app and log into your account. If it’s not installed, you can download it here.

2

Access Product Activation

Click on + ADD A GAME at the bottom-left of the Steam window, then choose Activate a Product on Steam... to begin.

3

Proceed to Activation

A new window will appear for product activation. Simply click Next to continue.

4

Accept the Terms

Review the Steam Subscriber Agreement, then click I Agree to move forward.

5

Enter Your Game Code

Type in the Steam product key you received, then click Next to continue.

6

Finish & Locate Your Game

Click Finish to complete the process. You can install the game right away or do it later — it will be available in your Steam Library.

1

Open Product Activation

Make sure you are signed in to your Steam account, then head to Activate a Product on Steam from the + ADD A GAME menu.

2

Enter Your Code

Paste your Steam key into the box provided, tick the I Agree checkbox, and click Continue.

3

Find Your Game

That’s it! The game will be added to your Steam Library, ready for download whenever you choose.

1

Launch Steam & Sign In

Open the Steam app and log into your account. If it’s not installed, you can download it here.

2

Get the Verification Code

Log in to the Email Login URL using the credentials we sent you. Once you are in, copy the Steam verification code and enter it on the Steam client when prompted.

3

Enable Family Sharing

To play the game on your personal Steam account, follow this step-by-step guide: Watch the video tutorial.

4

Important Note

Some Steam games can’t be shared due to technical restrictions — especially those requiring third-party keys, subscriptions, or accounts.

5

You Own This Account

Full access is now yours — feel free to update the personal details. If you’d like to add more games later, let us know and we’ll create a custom offer for you at a discounted rate.

Please Note: Applying any changes to the purchased account, such as adding a payment method or changing the region, may result in the account being banned. In such cases, no refund is applicable.

1

Install Steam & Sign In

If you don’t have Steam installed yet, download it from the official website. Once installed, create a new account or sign in to your existing one.

2

Open the Gift Link

You’ll receive an email with a Steam gift link. Click it to launch Steam — make sure you are logged into the correct account before continuing.

3

Redeem the Gift

After clicking the link, Steam will notify you of a new gift in the top-right corner of the client. Follow the on-screen steps to accept and add the game to your library.

Please Note: We are not responsible for any issues related to the purchase or use of Steam Gift links. You use them at your own risk.

Due to a recent update in Valve’s policy, Steam Gifts for games protected by the VAC system cannot be added to your inventory. They must go directly to your library. Always ensure you are logged into the correct Steam account before redeeming the gift link.

1

Open the Gift Link

You’ll receive a gift link via email or order page. Open it in your web browser to begin the process.

2

Connect Your Steam Profile

Depending on the platform, you’ll either be asked to paste your Steam profile URL or sign in using Steam. This step links the gift to your account.

3

Set the Correct Country

If prompted, choose the same country as your Steam store region. You can check yours under Steam > Account Details.

4

Accept the Bot’s Friend Request

Our automated system will send you a friend request from a gifting bot. Accept it to proceed with delivery.

5

Receive Your Game

Once you are friends, the bot will send the purchased game directly to your Steam account as a gift. Accept it to add it to your library.

FAQs

Why are your prices so cheap?

We work directly with verified bulk distributors who apply to partner with us. That means no middlemen, no inflated markups, just competitive deals we lock in behind the scenes, so you always get the best possible price.

Are all of your products legit?

Yes, every product sold on Keydra is sourced from trusted suppliers and fully verified before going live. We don’t deal in grey-area reselling or sketchy sources. It’s all real, and it’s all backed by our replacement policy.

How fast will I receive my order?

Most orders are delivered instantly after purchase. Some account-based products may take up to 24 hours for manual processing; but we always aim to get it to you as fast as possible. You’ll see the expected delivery time clearly on each product page.

Is anything sent to my address?

Never. All of our products are digital, that means, whether it's a code, an account, or a subscription, everything is delivered online. No physical shipping, no delays, no postage fees.

How do I redeem/see my order?

After purchase, you'll receive a secure link to view your key or account details. If the product requires manual processing, we’ll send a redemption link as soon as it’s ready. Step-by-step instructions are included whenever needed. (You may always view your order details on your dashboard if you created an account).

What happens if my key or account doesn’t work?

If something’s not working as it should, get in touch with us right away. We’ll review your case quickly and either replace the item or issue a refund, no hassle, no runaround. You’re never left in the dark with Keydra.

You can reach our support team at [email protected] or through our contact page - we’re here to help.

Do you offer refunds or replacements?

We do offer refunds or replacements for faulty products as long as the issue is reported within the valid window. To qualify, the product must not have been redeemed or used improperly. Instant refunds apply to keys that haven't been revealed.

Are your products region locked?

Some are, some aren’t, but we make it crystal clear. You’ll always see the region listed on the product page (e.g. EU). Our system auto-detects your location to help avoid mismatches.

Can I trust Keydra.net?

Absolutely. Keydra was built by long-time merchants who know the space inside-out. We launched with one mission: fair pricing, fast delivery, no B.S. That’s why every order is protected, and every deal is real, no hidden fees.

Do I need to create an account to order?

Nope checkout is guest-friendly. But creating a Keydra account unlocks faster order access, easier refunds, and exclusive deals. Totally up to you. We made Keydra to be as convenient as possible.

Other Details

Region Global / Worldwide
Genre Action, Co-op, FPS, Indie, RPG, Simulation
Publisher Zero Point Software
Developer Zero Point Software
Languages
- 🇬🇧 English

Windows

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

Mac

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

Linux

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

This product will be delivered as a Steam Key

1

Launch Steam & Sign In

Open the Steam app and log into your account. If it’s not installed, you can download it here.

2

Access Product Activation

Click on + ADD A GAME at the bottom-left of the Steam window, then choose Activate a Product on Steam... to begin.

3

Proceed to Activation

A new window will appear for product activation. Simply click Next to continue.

4

Accept the Terms

Review the Steam Subscriber Agreement, then click I Agree to move forward.

5

Enter Your Game Code

Type in the Steam product key you received, then click Next to continue.

6

Finish & Locate Your Game

Click Finish to complete the process. You can install the game right away or do it later — it will be available in your Steam Library.

1

Open Product Activation

Make sure you are signed in to your Steam account, then head to Activate a Product on Steam from the + ADD A GAME menu.

2

Enter Your Code

Paste your Steam key into the box provided, tick the I Agree checkbox, and click Continue.

3

Find Your Game

That’s it! The game will be added to your Steam Library, ready for download whenever you choose.

1

Launch Steam & Sign In

Open the Steam app and log into your account. If it’s not installed, you can download it here.

2

Get the Verification Code

Log in to the Email Login URL using the credentials we sent you. Once you are in, copy the Steam verification code and enter it on the Steam client when prompted.

3

Enable Family Sharing

To play the game on your personal Steam account, follow this step-by-step guide: Watch the video tutorial.

4

Important Note

Some Steam games can’t be shared due to technical restrictions — especially those requiring third-party keys, subscriptions, or accounts.

5

You Own This Account

Full access is now yours — feel free to update the personal details. If you’d like to add more games later, let us know and we’ll create a custom offer for you at a discounted rate.

Please Note: Applying any changes to the purchased account, such as adding a payment method or changing the region, may result in the account being banned. In such cases, no refund is applicable.

1

Install Steam & Sign In

If you don’t have Steam installed yet, download it from the official website. Once installed, create a new account or sign in to your existing one.

2

Open the Gift Link

You’ll receive an email with a Steam gift link. Click it to launch Steam — make sure you are logged into the correct account before continuing.

3

Redeem the Gift

After clicking the link, Steam will notify you of a new gift in the top-right corner of the client. Follow the on-screen steps to accept and add the game to your library.

Please Note: We are not responsible for any issues related to the purchase or use of Steam Gift links. You use them at your own risk.

Due to a recent update in Valve’s policy, Steam Gifts for games protected by the VAC system cannot be added to your inventory. They must go directly to your library. Always ensure you are logged into the correct Steam account before redeeming the gift link.

1

Open the Gift Link

You’ll receive a gift link via email or order page. Open it in your web browser to begin the process.

2

Connect Your Steam Profile

Depending on the platform, you’ll either be asked to paste your Steam profile URL or sign in using Steam. This step links the gift to your account.

3

Set the Correct Country

If prompted, choose the same country as your Steam store region. You can check yours under Steam > Account Details.

4

Accept the Bot’s Friend Request

Our automated system will send you a friend request from a gifting bot. Accept it to proceed with delivery.

5

Receive Your Game

Once you are friends, the bot will send the purchased game directly to your Steam account as a gift. Accept it to add it to your library.

Why are your prices so cheap?

We work directly with verified bulk distributors who apply to partner with us. That means no middlemen, no inflated markups, just competitive deals we lock in behind the scenes, so you always get the best possible price.

Are all of your products legit?

Yes, every product sold on Keydra is sourced from trusted suppliers and fully verified before going live. We don’t deal in grey-area reselling or sketchy sources. It’s all real, and it’s all backed by our replacement policy.

How fast will I receive my order?

Most orders are delivered instantly after purchase. Some account-based products may take up to 24 hours for manual processing; but we always aim to get it to you as fast as possible. You’ll see the expected delivery time clearly on each product page.

Is anything sent to my address?

Never. All of our products are digital, that means, whether it's a code, an account, or a subscription, everything is delivered online. No physical shipping, no delays, no postage fees.

How do I redeem/see my order?

After purchase, you'll receive a secure link to view your key or account details. If the product requires manual processing, we’ll send a redemption link as soon as it’s ready. Step-by-step instructions are included whenever needed. (You may always view your order details on your dashboard if you created an account).

What happens if my key or account doesn’t work?

If something’s not working as it should, get in touch with us right away. We’ll review your case quickly and either replace the item or issue a refund, no hassle, no runaround. You’re never left in the dark with Keydra.

You can reach our support team at [email protected] or through our contact page - we’re here to help.

Do you offer refunds or replacements?

We do offer refunds or replacements for faulty products as long as the issue is reported within the valid window. To qualify, the product must not have been redeemed or used improperly. Instant refunds apply to keys that haven't been revealed.

Are your products region locked?

Some are, some aren’t, but we make it crystal clear. You’ll always see the region listed on the product page (e.g. EU). Our system auto-detects your location to help avoid mismatches.

Can I trust Keydra.net?

Absolutely. Keydra was built by long-time merchants who know the space inside-out. We launched with one mission: fair pricing, fast delivery, no B.S. That’s why every order is protected, and every deal is real, no hidden fees.

Do I need to create an account to order?

Nope checkout is guest-friendly. But creating a Keydra account unlocks faster order access, easier refunds, and exclusive deals. Totally up to you. We made Keydra to be as convenient as possible.

Other Details

Region Global / Worldwide
Genre Action, Co-op, FPS, Indie, RPG, Simulation
Publisher Zero Point Software
Developer Zero Point Software
Languages
- 🇬🇧 English

Consider these

Products that are popular among players like you

SHINOBI: Art of Vengeance PC Steam Account

Steam Account • Global

£13.21

VCB: Why City - The Ballad Of Drunk Khovansky Steam CD Key

Steam Key • Global

£77.32

£45.42

-41%

A Plague Tale: Innocence XBOX One / Xbox Series X|S Online Account Activation

XBOX Account • Global

£5.61

Marvel's Spider-Man GOTY PS4/PS5 Online Account Activation

PSN Account • Global

£16.87

Roguelands Steam CD Key

Steam Key • Global

£19.40

£10.44

-46%

Mittelborg: City of Mages Steam CD Key

Steam Key • Global

£10.53

£5.02

-52%

Steam Key

(Global) – Will work in US

Instant Delivery

Interstellar Marines Steam CD Key

Steam Key

(Global) – Will work in US

Instant Delivery

-52%

£4.16

Interstellar Marines Steam CD Key

£4.16

Windows

Mac

Linux

Product Activation Guides

This product will be delivered as a Steam Key

We work directly with verified bulk distributors who apply to partner with us. That means no middlemen, no inflated markups, just competitive deals we lock in behind the scenes, so you always get the best possible price.

Yes, every product sold on Keydra is sourced from trusted suppliers and fully verified before going live. We don’t deal in grey-area reselling or sketchy sources. It’s all real, and it’s all backed by our replacement policy.

Most orders are delivered instantly after purchase. Some account-based products may take up to 24 hours for manual processing; but we always aim to get it to you as fast as possible. You’ll see the expected delivery time clearly on each product page.

Never. All of our products are digital, that means, whether it's a code, an account, or a subscription, everything is delivered online. No physical shipping, no delays, no postage fees.

We do offer refunds or replacements for faulty products as long as the issue is reported within the valid window. To qualify, the product must not have been redeemed or used improperly. Instant refunds apply to keys that haven't been revealed.

Some are, some aren’t, but we make it crystal clear. You’ll always see the region listed on the product page (e.g. EU). Our system auto-detects your location to help avoid mismatches.

Absolutely. Keydra was built by long-time merchants who know the space inside-out. We launched with one mission: fair pricing, fast delivery, no B.S. That’s why every order is protected, and every deal is real, no hidden fees.

Nope checkout is guest-friendly. But creating a Keydra account unlocks faster order access, easier refunds, and exclusive deals. Totally up to you. We made Keydra to be as convenient as possible.

Other Details

Windows

Mac

Linux

Product Activation Guides

This product will be delivered as a Steam Key

We work directly with verified bulk distributors who apply to partner with us. That means no middlemen, no inflated markups, just competitive deals we lock in behind the scenes, so you always get the best possible price.

Yes, every product sold on Keydra is sourced from trusted suppliers and fully verified before going live. We don’t deal in grey-area reselling or sketchy sources. It’s all real, and it’s all backed by our replacement policy.

Most orders are delivered instantly after purchase. Some account-based products may take up to 24 hours for manual processing; but we always aim to get it to you as fast as possible. You’ll see the expected delivery time clearly on each product page.

Never. All of our products are digital, that means, whether it's a code, an account, or a subscription, everything is delivered online. No physical shipping, no delays, no postage fees.

We do offer refunds or replacements for faulty products as long as the issue is reported within the valid window. To qualify, the product must not have been redeemed or used improperly. Instant refunds apply to keys that haven't been revealed.

Some are, some aren’t, but we make it crystal clear. You’ll always see the region listed on the product page (e.g. EU). Our system auto-detects your location to help avoid mismatches.

Absolutely. Keydra was built by long-time merchants who know the space inside-out. We launched with one mission: fair pricing, fast delivery, no B.S. That’s why every order is protected, and every deal is real, no hidden fees.

Nope checkout is guest-friendly. But creating a Keydra account unlocks faster order access, easier refunds, and exclusive deals. Totally up to you. We made Keydra to be as convenient as possible.

Other Details

Consider these

Products that are popular among players like you

SHINOBI: Art of Vengeance PC Steam Account

VCB: Why City - The Ballad Of Drunk Khovansky Steam CD Key

A Plague Tale: Innocence XBOX One / Xbox Series X|S Online Account Activation

Marvel's Spider-Man GOTY PS4/PS5 Online Account Activation

Roguelands Steam CD Key

Mittelborg: City of Mages Steam CD Key

Join our newsletter to get early access to drops, hidden discounts, and limited-time offers.

By subscribing, you agree to receive promotional emails from keydra.net, including updates on new products, exclusive offers, and services.

Ways to pay:

Never pay full price again! Keydra unlocks 100,000+ digital deals 🎮 updated daily. Shop Game keys, accounts, top-ups & more — delivered instantly ⚡ and always on your terms. Help to accelerate Keydra by sharing your feedback on Trustpilot. Built with love, for Gamers.

Keydra

Contact

Account

Copyright © 2025 Keydra. All Rights Reserved

My Cart

Never pay full price again! Keydra unlocks 100,000+ digital deals 🎮 updated daily. Shop Game keys, accounts, top-ups & more — delivered instantly ⚡ and always on your terms.

Help to accelerate Keydra by sharing your feedback on Trustpilot.
Built with love, for Gamers.