How do I activate my Outbreak Steam key?

1. Open the Steam client. 2. Click "Add a Game" in the bottom left corner. 3. Select "Activate a Product on Steam" from the dropdown. 4. Enter the code and follow any on-screen instructions.

How fast will I receive my key?

Your key is delivered instantly after purchase. Once payment is processed, the key will appear in your account dashboard, ready to reveal, copy, and activate through Steam.

Is it safe to buy game keys on GameBoost?

Yes. GameBoost is a verified marketplace rated Excellent on Trustpilot with over 18,000 reviews. Every purchase includes instant delivery, 3% cashback in GB Coins, and 24/7 live chat support.

What is your refund policy?

You are eligible for a refund if the key has not been revealed and a valid refund reason is provided and approved by GameBoost, if the delivered key is not as described (wrong edition, wrong platform, or cannot be activated in your country despite being listed as compatible), or if the key is invalid or duplicated. You are not eligible for a refund if the key has been revealed and redeemed successfully, if the key works correctly and matches the product description, or if you do not like the game or changed your mind. Contact GameBoost's 24/7 live chat support for any refund requests.

Is this a Steam key or an account?

This is a Steam key, not an account. You activate it on your own existing Steam account and retain full ownership of the game permanently.

Can Outbreak be played solo?

Yes. The game is fully playable alone, with up to three-player online co-op available for those who prefer teaming up.

How difficult is Outbreak?

The game is designed to be genuinely challenging, especially on its harder difficulty settings, where ammunition and supplies become extremely scarce. Difficulty also affects how much of the story is revealed through in-game notes, with harder settings offering less narrative context along the way.

Does the standard purchase include any DLC?

No. Several cosmetic DLC packs, including alternate flashlights, lasers, and player skins, are sold separately from the base game.

Buy Cheap Outbreak Steam Key

Q: What regions does this key work in?

This key is available in multiple regions. Select your region at checkout to confirm availability for your country. If you are unsure whether your country is supported, check the activation details on the product page before completing your purchase.

Trailer, Artwork & Screenshots (6)

Artwork

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Description

Explore a nightmarish environment, scrounge for supplies, and battle the undead in Outbreak -- an online and offline co-op survival horror game. The clock never stops as you attempt to manage an extremely limited inventory with a murderous horde on the hunt. Choose between acquiring additional weapons, healing items, or necessary tools for progression. You have only one life. Make it count!

Local Co-op: Play Campaign and Onslaught Mode in 2-player splitscreen!
Cross Platform: Play co-op with Windows & Linux together!
Friendly play: 4-player online co-op multiplayer featuring voice chat.
Cut the cord: All modes playable in offline single-player with pause support.
Campaign Mode: Play the entire story alone or in up to 4-player co-op!
Nightmares Mode: Narrative hardcore single-player story mode.
Onslaught Mode: Fight waves of endless enemies alone or with friends!
Offline backup: Optional Partner AI bot in solo Campaign & Onslaught modes.
Dark atmosphere: Explore a deserted hospital infested by the undead.
Brutal difficulty: Your character only has a single life; includes 3 difficulty settings.
Limited inventory: Decide which items are worthy, and which should be left behind.
Expansive arsenal: Defend yourself with a multitude of firearms and melee weapons.
Challenging puzzles: Scour each room to solve puzzles and learn about the outbreak.
High replayability: Semi-random enemy and item layouts make every playthrough unique.
Distinct survivors: Seven playable heroes with unique attributes and starting equipment.
Essential equipment: Earn during play and trade with other players.
Play your way: Customizable gamepad, mouse and keyboard controls.
Worldwide multiplayer: Cloud-based backend with region selector means no NAT issues.

Buy Outbreak Steam Key

Buy your Outbreak Steam key on GameBoost and get it delivered instantly to your account after purchase. Your key is ready the moment your order goes through, with nothing to wait for. Every purchase also earns 3% cashback in GB Coins, and GameBoost's 24/7 live chat support is there if you need anything. With over 18,000 Trustpilot reviews, GameBoost is a trusted place to find PC games at the best prices. From new releases to classic titles, GameBoost offers our full Steam game catalogue across the full range of PC gaming.

About Outbreak

Outbreak is a cooperative survival horror game developed and published by Dead Drop Studios, an independent studio dedicated to reviving the classic survival horror genre. It was released on January 17, 2017, for PC via Steam, and marks the first entry in what has since grown into an ongoing Outbreak series, with sequels including Outbreak: Epidemic and Outbreak: Shades of Horror following in the years since.

The game draws direct inspiration from 1990s and early 2000s survival horror titles, deliberately recreating the tone, pacing, and design philosophy of that era. Players select from a cast of survivor characters caught at the start of a zombie epidemic and fight through claustrophobic, resource-scarce environments where ammunition and supplies run out fast, and every encounter carries real risk. Exploration, puzzle-solving, and careful inventory management sit alongside combat, with the game's difficulty settings shaping how much narrative context is revealed through scattered notes and story elements found along the way.

Combat blends firearms and melee weapons against hordes of the undead, with the game leaning into a genuinely punishing difficulty curve, particularly on its harder settings where resources become extremely tight. Outbreak can be played entirely solo or in online co-op with up to three other players, letting a group of survivors tackle the epidemic together. Several DLC packs are available separately, covering cosmetic items like alternate flashlights, lasers, and player skins.

Region & Activation

This game key is available in multiple regions. Select your region at checkout to see availability and pricing for your country. If you are unsure whether your country is supported, check the activation details on the product page before purchasing.