Skip to main content Skip to footer
Keydra
Sign in
GamesAccountsGift cardsSoftwareMystery Keys GTA VI 🔥 Productivity Sale 📝
  1. Home /
  2. Publishers /
  3. Systemic Reaction

Systemic Reaction games, keys and accounts

Systemic Reaction is a Swedish studio and label known for open-world co-op action, where small squads take on overwhelming machine and monster threats.

The catalogue covers Generation Zero and its many add-on packs, the dinosaur shooter Second Extinction and the roguelite adventure Ravenbound, on Steam and Xbox.

All publishers

Filters

Systemic Reaction

Generation Zero – FNIX Rising DLC EU Steam Altergift CASHBACK
STEAM ALTERGIFT

Generation Zero – FNIX Rising DLC EU Steam Altergift

STEAM ALTERGIFT • EUROPE

$0.00

$11.84

-0%
Generation Zero – Tactical Equipment Pack DLC EU Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Tactical Equipment Pack DLC EU Steam Digital Key

STEAM KEY • EUROPE

$0.00

$5.79

-0%
Generation Zero – Camo Weapon Skins Pack DLC EU Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Camo Weapon Skins Pack DLC EU Steam Digital Key

STEAM KEY • EUROPE

$5.77

$2.38

-59%
Generation Zero EU Steam Altergift CASHBACK
STEAM ALTERGIFT

Generation Zero EU Steam Altergift

STEAM ALTERGIFT • EUROPE

$23.10

$5.85

-75%
Generation Zero Steam Altergift CASHBACK
STEAM ALTERGIFT

Generation Zero Steam Altergift

STEAM ALTERGIFT • GLOBAL

$23.10

$5.85

-75%
Epic Games
CASHBACK
EPIC ACCOUNT

Second Extinction Epic Games Account

EPIC ACCOUNT • GLOBAL

$34.66

$4.38

-87%
CASHBACK
STEAM KEY

Second Extinction Steam Digital Key

STEAM KEY • GLOBAL

$34.66

$31.57

-9%
Generation Zero: Starter Pack Bundle Steam Digital Key CASHBACK
STEAM KEY

Generation Zero: Starter Pack Bundle Steam Digital Key

STEAM KEY • GLOBAL

$11.54

$10.42

-10%
Generation Zero – Eastern European Weapons Pack DLC Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Eastern European Weapons Pack DLC Steam Digital Key

STEAM KEY • GLOBAL

$5.77

$2.30

-60%
Ravenbound EU Steam Digital Key CASHBACK
STEAM KEY

Ravenbound EU Steam Digital Key

STEAM KEY • EUROPE

$28.88

$3.59

-88%
Generation Zero – Soviet Weapons Pack Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Soviet Weapons Pack Steam Digital Key

STEAM KEY • GLOBAL

$5.77

$1.76

-69%
Generation Zero – Tactical Equipment Pack 2 DLC Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Tactical Equipment Pack 2 DLC Steam Digital Key

STEAM KEY • GLOBAL

$11.54

$2.69

-77%
Generation Zero – Heavy Weapons Pack DLC Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Heavy Weapons Pack DLC Steam Digital Key

STEAM KEY • GLOBAL

$5.77

$3.13

-46%
Generation Zero – Tactical Equipment Pack DLC Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Tactical Equipment Pack DLC Steam Digital Key

STEAM KEY • GLOBAL

$5.77

$2.24

-61%
Generation Zero Ultimate Bundle XBOX One / Xbox Series X|S / Windows 10 Account CASHBACK
XBOX ACCOUNT

Generation Zero Ultimate Bundle XBOX One / Xbox Series X|S / Windows 10 Account

XBOX ACCOUNT • GLOBAL

$17.32

$2.48

-86%
Generation Zero – Base Defense Pack DLC Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Base Defense Pack DLC Steam Digital Key

STEAM KEY • GLOBAL

$5.77

$1.61

-72%
Generation Zero XBOX One / Xbox Series X|S Account CASHBACK
XBOX ACCOUNT

Generation Zero XBOX One / Xbox Series X|S Account

XBOX ACCOUNT • GLOBAL

$5.77

$3.51

-39%
Generation Zero – Companion Accessories Pack DLC EU Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Companion Accessories Pack DLC EU Steam Digital Key

STEAM KEY • EUROPE

$5.77

$3.95

-32%
Generation Zero LATAM Steam Digital Key CASHBACK
STEAM KEY

Generation Zero LATAM Steam Digital Key

STEAM KEY • LATAM

$23.10

$3.91

-83%
Generation Zero Resistance Bundle AR XBOX One / Xbox Series X|S Digital Key CASHBACK
XBOX KEY

Generation Zero Resistance Bundle AR XBOX One / Xbox Series X|S Digital Key

XBOX KEY • ARGENTINA

$11.54

$7.59

-34%
Generation Zero – US Weapons Pack Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – US Weapons Pack Steam Digital Key

STEAM KEY • GLOBAL

$5.77

$2.20

-62%
Generation Zero – FNIX Rising DLC Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – FNIX Rising DLC Steam Digital Key

STEAM KEY • GLOBAL

$5.77

$3.07

-47%
Generation Zero US XBOX One Digital Key CASHBACK
XBOX KEY

Generation Zero US XBOX One Digital Key

XBOX KEY • UNITED STATES

$23.10

$18.56

-20%
Generation Zero EU XBOX One Digital Key CASHBACK
XBOX KEY

Generation Zero EU XBOX One Digital Key

XBOX KEY • EUROPE

$23.10

$5.44

-76%
Generation Zero – Motorbikes Pack DLC Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Motorbikes Pack DLC Steam Digital Key

STEAM KEY • GLOBAL

$5.77

$4.24

-27%
Generation Zero – Camo Weapon Skins Pack DLC Steam Digital Key CASHBACK
STEAM KEY

Generation Zero – Camo Weapon Skins Pack DLC Steam Digital Key

STEAM KEY • GLOBAL

$5.77

$2.05

-64%
Generation Zero Ultimate Bundle AR XBOX One / Xbox Series X|S / Windows 10 Digital Key CASHBACK
XBOX KEY

Generation Zero Ultimate Bundle AR XBOX One / Xbox Series X|S / Windows 10 Digital Key

XBOX KEY • ARGENTINA

$17.32

$11.74

-32%
Generation Zero Resistance Bundle Steam Digital Key CASHBACK
STEAM KEY

Generation Zero Resistance Bundle Steam Digital Key

STEAM KEY • GLOBAL

$0.00

$11.51

-0%
Can't decide?
No results found.

About Systemic Reaction

Systemic Reaction makes and publishes systems-driven action games in Sweden, built around open environments, emergent combat and drop-in co-operative play. Its best-known title is Generation Zero, a first-person shooter set in an alternate 1980s Swedish countryside overrun by hostile machines.

Alongside it sit Second Extinction, a co-op shooter pitched against mutated dinosaurs, and Ravenbound, a roguelite action adventure set in a Nordic-inspired open world. Together they show a house style of replayable action and adventure games made for repeat runs rather than a single playthrough.

Games in the Systemic Reaction range

Generation Zero anchors the range and comes on Steam and Xbox One, as both keys and accounts. Its expansion content is broad: the Resistance Bundle and Ultimate Bundle gather larger packages, while separate add-ons such as FNIX Rising, Base Defense Pack, Motorbikes Pack, Camo Weapon Skins Pack, Companion Accessories Pack, Tactical Equipment Pack 2 and the US, Soviet and Eastern European weapons packs extend the arsenal and the fight against the machines. All add-on content requires the base game on the same account.

Second Extinction is listed for Steam and Epic Games, as keys and accounts, and Ravenbound comes as a Steam key. Genres across the range run from FPS and co-op shooters to action adventure, with Steam keys making up most of the selection and Xbox codes covering the console side.

How buying works

Each product activates on the platform named in its listing: Steam products are redeemed in the Steam client or website, Epic Games products in the Epic launcher, and Xbox products through the Microsoft Store or console redemption screen. Step-by-step help is available for activating a Steam key and for Xbox key redemption.

Most items are keys, which you redeem on your own account. Some Generation Zero and Second Extinction listings are game accounts, supplied with the game already on it, so you sign in rather than redeem a code. Games are sold per region, and a key has to match the region of the account it is being activated on, so check the region of a listing against your account before buying.

Common questions

Which platform do these games activate on?
Each listing states its platform. Generation Zero products activate on Steam or Xbox, Second Extinction on Steam or Epic Games, and Ravenbound on Steam.
Will a key work in another country?
Only if the region matches. A key must be redeemed on an account set to the region the key is intended for, otherwise activation is refused.
What is the difference between a key and an account?
A key is a code you redeem to add the game to your own account. An account listing arrives with the game already on it and is signed into instead.
Do the Generation Zero DLC packs need the base game?
Yes. Add-ons such as FNIX Rising, the weapons packs and the bundles require Generation Zero on the same account and platform.
When do I receive my key or account details?
The key or account details are delivered to your order once payment completes.

Keep browsing

More categories

  • Activision games
  • Infogrames games
  • Ubisoft games
  • SEGA games
  • Capcom games
  • Xbox Game Studios games
  • All publishers

Guides and help

  • How to activate a Steam key
  • How to activate an Xbox key
  • What are game accounts?
  • Are products region locked?
  • Visa
  • Mastercard
  • American Express
  • PayPal
  • Apple Pay
  • Google Pay
  • iDEAL
  • Alipay
  • and many more
Bestsellers Game keys Game accounts Software Prepaid cards DLC Game picker
Keydra

Never pay full price again.

Shop 60,000+ digital deals - game keys, accounts, software, subscriptions and gift cards, delivered instantly, on your terms.

Read Keydra reviews on Trustpilot Add Keydra as a preferred source on Google

Company

  • Why Keydra?
  • Is Keydra legit?
  • Why our prices are low
  • Work with us
  • Keydra Cashback
  • Affiliate programme
  • Blog

Support

  • General FAQs
  • Activation guides
  • Orders and delivery
  • Refunds and returns
  • Verification
  • Payment methods
  • What are game accounts?

Need help?

Our team answers every ticket, usually within just a few hours.

Help center Create a ticket

Save an extra 5%

Join the newsletter for exclusive deals and surprise drops.

Steam

  • Steam keys
  • Steam accounts
  • Steam DLC

Xbox

  • Xbox keys
  • Xbox accounts
  • Xbox prepaid cards

PlayStation

  • PlayStation keys
  • PlayStation accounts
  • PS Plus accounts

Nintendo

  • Nintendo Switch keys
  • Nintendo Switch DLC

PC launchers

  • Epic Games
  • EA App
  • Ubisoft
  • GOG.com
  • Battle.net

Software

  • Software licences
  • Microsoft
  • VMware
  • Avast
  • NordVPN

Subscriptions

  • Spotify Premium
  • YouTube Premium
  • Roblox
  • Prepaid and gift cards

Action and shooters

  • Action games
  • FPS games
  • Fighting games
  • Survival games
  • Horror games

Story and strategy

  • RPGs
  • Adventure games
  • Strategy games
  • Simulation games
  • Story rich games

Casual and sports

  • Indie games
  • Casual games
  • Racing games
  • Sports games
  • Co-op games
  • Open world games

Current deals

  • PS Plus Accounts
  • YouTube Premium
  • Game Accounts
  • Spotify Premium
  • Productivity Sale
  • GTA 6

From the blog

  • Deals
  • Guides
  • Hardware
  • News
  • Reviews

Copyright © 2026 Keydra.net. All rights reserved.

  • Privacy policy
  • Terms and conditions
  • Refund policy
  • Legal and compliance
  • Impressum
  • Visa
  • Mastercard
  • American Express
  • PayPal
  • Apple Pay
  • Google Pay
  • iDEAL
  • Alipay
  • and many more
We use cookies to improve your experience. Choose “Accept cookies” to allow non-essential cookies or “Reject” to use only essential ones. See our privacy policy and terms.
Join our newsletter

We’ll email you a 10-minute verification link.

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

Sign in
or sign in with
New to Keydra?
Create your account
Already have an account?
Create your account
  • At least 8 characters
  • Contains a letter
  • Contains a number

By creating an account, you agree to our Terms & Privacy Policy.

Two-factor authentication

Enter the 6-digit code we emailed you. It expires in 15 minutes.

Reset your password

Enter your email and we'll send you a link to set a new password.

Set a new password
At least 8 characters, with a letter and a number.
Check your inbox

We've sent a verification link to your email. Click it to activate your account, then sign in.

You're all set

Your email has been verified and your account is now active. Sign in to get started.

Check your inbox

If an account exists for your email, a password-reset link is on its way. The link expires in 10 minutes.

Check your inbox

If an account exists for your email, we've sent a one-tap sign-in link. It expires in 15 minutes.

Email me a login link

We'll email you a secure link that signs you in - no password needed.

Password updated

Your password has been changed and you've been signed out of all devices. Sign in with your new password.

Regional Preferences

Currency

Only show products that work in my region

Hides listings that won't activate where you select.

Home

Added to cart

Go to cart