Which digital format of Back 4 Blood Expansion 1 Tunnels of Terror should I buy for PC? An Account or a Steam Key ?

The account format is cheaper but has a more complicated activation process compared to a simple key or code. It may also cause access issues in the future, which is why we only recommend it to users who are familiar with this format or have used it before. If you’re looking for a simpler and safer activation process and don’t mind paying a bit more, we recommend buying the Steam Key format.

If I buy the account format of Back 4 Blood Expansion 1 Tunnels of Terror, will the store provide all the activation instructions?

Yes, stores that sell this format usually guide users through the entire activation process, and if any issues arise, they offer customer support services. And if they don’t help, don’t worry—we’re here to assist you too.

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Some digital formats allow returns under certain conditions.

The store does not send my order and does not respond to support. What can I do?

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The final price is higher than indicated.

Many stores add payment fees, taxes,... in the cart. So be prepared to spend a little more.

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Back 4 blood expansion 1 tunnels of terror pc cd key

Buy Back 4 Blood Expansion 1 Tunnels of Terror CD Key for PC

Q: Why is the Steam Key of Back 4 Blood Expansion 1 Tunnels of Terror safer than the account format?

The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download Back 4 Blood Expansion 1 Tunnels of Terror to your game library. The account format requires more complicated steps and is more prone to errors during activation.

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Prices for Back 4 Blood Expansion 1 Tunnels of Terror Steam Key for PC (August 2026)

The cheapest price is 4.69€ (-69%) at Instant Gaming with a rating of 4.7 (830.7k reviews) · Version Steam Key · Region Global · We compare prices at 9 verified stores with 13 offers in stock · Updated on 04/08/2026 05h 42min. ago

Steam Key

Cheapest

4.7(830.7k)

€4.69

No code available

Steam Key

Official store

1.8(3.7k)

€14.99

No code available

View 13 offers from €4.69

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Current minimum price

Medium price

Official stores are authorized distributors, and while their prices may be higher than Key stores, their reliability is 100%.

“Choose it if you don’t mind the price difference”

Key stores are resellers and marketplaces, which is why they are usually cheaper than official stores. We only show the best ones, so you can rest assured. Plus, we offer our guarantee against any issues.

“Choose it if you’re looking for a great discount”

You still don't have enough tickets!

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We will start the verification process of your account, which may take 48-72 hours.
If you have not broken any of our rules, we will send you the cheapest version of the game to the email address associated with your account.
In the event that the game is out of stock or only available in a format such as accounts or physical, we will offer the possibility of an exchange for a prepaid card for the minimum value of the game on our platform.
For console games, a prepaid card of different amounts will be given instead of the game, due to regional limitations.
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This promotion is only available to US, UK and EU users.
Game redemption is only allowed once every 6 months per user.

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You have enough tickets!

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We will start the verification process of your account, which may take 48-72 hours.
If you have not broken any of our rules, we will send you the cheapest version of the game to the email address associated with your account.
In the event that the game is out of stock or only available in a format such as accounts or physical, we will offer the possibility of an exchange for a prepaid card for the minimum value of the game on our platform.
For console games, a prepaid card of different amounts will be given instead of the game, due to regional limitations.
Your tickets will disappear from your account
This promotion is only available to US, UK and EU users.
Game redemption is only allowed once every 6 months per user.

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Editions Standard

Format Steam Key Steam Gift

Global EU US UK

Official stores 1 stores Hide Accounts

Taxes not included!

Taxes included!

Prices without final payment fees but with discount coupons applied. Prices include payment fees and any store discount code applied. Basic price Fees incl.

Key stores

Promoted store

4.1 (12.1k)

€22.06 €18.53

Product type Steam Key

Edition Standard

Fees +€1.54

Instant Gaming
HRKGame
Gamivo
CJS-CDKeys
Eneba
K4G
G2A

4.7 (830.7k)

No code available

€4.69

Region Global

Product type Steam Key

4.2 (29.7k)

€10.39 €9.14

Product type Steam Key

Edition Standard

Fees +€1.85

3.8 (49.5k)

Subscription from 2.01€/month

€11.42 €9.94 How to get this price

Region Global

Product type Steam Key

4.2 (29.7k)

€11.55 €10.16

Product type Steam Key

4.0 (120.8k)

Product type Steam Key

4.4 (309.2k)

€13.02 €11.72 How to get this price

Region Europe

Product type Steam Key

4.2 (17.2k)

€14.22 €12.23

Product type Steam Key

4.0 (344.2k)

€14.56 €12.08 How to get this price

Region Global

Product type Steam Key

Edition Standard

Fees +€0.04

4.0 (344.2k)

No code available

€18.38 How to get this price

Region Global

Product type Steam Gift

Edition Standard

Fees +€0.06

4.0 (344.2k)

No code available

€18.38 How to get this price

Region Europe

Product type Steam Gift

Edition Standard

Fees +€0.06

3.8 (49.5k)

Subscription from 2.01€/month

€84.57 €71.88 How to get this price

Region Europe

Product type Steam Key

Edition Standard

Fees +€11.84

Official stores

Steam

1.8 (3.7k)

No code available

€14.99

Region Global

Product type Steam Key

Edition Standard

Fees -

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The cheapest offer is from Instant Gaming in KEY format for a price of 4.69€

Buying at Instant Gaming saves you 69% compared to the official store

Among the listed stores, Instant Gaming4.7(830.7k) is one of the best rated by the community with a price of 4.69€

Gocdkeys - Transparency and credibility

At GOCDKEYS we display real prices from 49 verified stores. Some links may be affiliate links, which help us keep the service running at no extra cost to users. Prices and conditions are always exactly the same as those offered by the store. All stores go through our own store verification methodology, so you can buy with complete confidence.

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About Back 4 Blood Expansion 1 Tunnels of Terror

Tunnels of Terror features the all-new PvE areas “Ridden Hives", along with 2 new playable Cleaners, new Legendary Weapons, 12 weapon skins, new cards, 8 premium skins, and the fearsome Warped Ridden to discover below the depths of Evansburgh.

With the launch of Tunnels of Terror, players can explore Ridden Hives. These labyrinthine tunnels promise incredible goods to those that brave its depths, but be warned--Ridden infest these passageways and there are new mutated strains that will hunt you down.

Expansion 1 includes:
All-New Ridden Hives PvE Activity
2 New Playable Cleaners
3 New Warped Ridden
8 Exclusive Character Skins
12 Exclusive Weapon Skins
15+ New Cards
+ More

How much does Back 4 Blood Expansion 1 Tunnels of Terror for PC cost right now?

Back 4 Blood Expansion 1 Tunnels of Terror for PC starts at €4.69 at Instant Gaming, a Steam key, which is 69% under the €14.99 it costs on the official store.

9 stores carry it, 13 offers in total and 11 available right now; the figure above is the cheapest of the ones you can actually order.

Steam Key

€4.69

Stays on your account for good

Steam Gift

€18.38

Pricier and more likely to fail

Is it worth buying the Steam Key for Back 4 Blood Expansion 1 Tunnels of Terror now or waiting?

That €4.69 key is at its usual price: no bargain, no spike.

Those €4.69 are 6% above what it usually costs, measured on the store price.
8 stores sell the Steam Key at the same time, and with that much competition the price moves almost daily.
Not counting today, 615 days out of the 918 days on record were this cheap or cheaper; the lowest it has ever cost is €1.60.

It is not a bad price, but it is not this Steam Key's floor either. If you are in no rush, we will tell you the day it drops.

Worked out from 1,894 daily records of the Steam Key for Back 4 Blood Expansion 1 Tunnels of Terror across 18 stores. See the full price history.

The price does not include each store's payment fees. The percentage is measured on the store price, without coupons, because that is how we record the history. The analysis only counts Key offers. Shared accounts, Steam Gift and physical editions stay out, because they are not the same product and their prices move differently.

Which Back 4 Blood Expansion 1 Tunnels of Terror format should you buy?

By format: Steam Key from €4.69 and Steam Gift from €18.38.

Can you activate Back 4 Blood Expansion 1 Tunnels of Terror in US?

7 of the 13 offers work on US — the Global ones plus the ones issued for your own region.

Why is there such an expensive Back 4 Blood Expansion 1 Tunnels of Terror offer?

One listing is worth ignoring: the Steam key that Gamivo has at €71.88 is more than 15 times the cheapest offer and is not what this game costs. The number to work from is €4.69 at Instant Gaming.

So, which Back 4 Blood Expansion 1 Tunnels of Terror deal should you buy?

Get it now: the cheapest key is at Instant Gaming for €4.69 and the game stays on your own account.

The lowest we have ever seen is €1.60, so waiting is unlikely to give you much more than you already have today.

WHY SHOULD YOU BUY Back 4 Blood Expansion 1 Tunnels of Terror FOR STEAM?

Expansion 1 is a DLC that offers players a new experience in the action game Back 4 Blood, where you can fight the evil hordes of zombies in the claustrophobic Tunnels of Terror.

WHAT WILL YOU FIND AT GOCDKEYS?

Our price comparator will allow you to find the best offer for Back 4 Blood Expansion 1 Tunnels of Terror in Steam Key format, a digital key (also known as CD Key) that you can redeem on the official Steam video game platform. This way, you will always enjoy buying your PC games at the cheapest possible price.

WHAT SHOULD YOU KNOW BEFORE BUYING Back 4 Blood Expansion 1 Tunnels of Terror?

What versions of this product will I find?

At Gocdkeys we include the different offers of Back 4 Blood Expansion 1 Tunnels of Terror in digital format for PC. In addition to the standard edition, there may be other special editions such as the Deluxe Edition or the Ultimate Edition. We indicate next to the price if it is a special edition.

Can this digital version have restrictions?

The vast majority of keys you will find are global and can be activated from any country, but sometimes they may be exclusive keys that can only be activated in specific regions of the world such as the United States, Europe or the United Kingdom. We will let you know if there are any such restrictions along with the price, so remember to check!

How are games received in digital format?

After purchasing the product, you will receive a digital key, also known as a key, in your email that you can easily redeem on the Steam video game platform.

REASONS TO PLAY Back 4 Blood Expansion 1 Tunnels of Terror FOR PC

1- Back 4 Blood: Expansion 1 includes the new scenarios of the Colonies of infected in which you will enter in labyrinthine subway tunnels.

2- You will be able to enjoy two new playable exterminators and new legendary weapons to customize them.

3- Also included are 3 new deformed infected, 8 exclusive character skins, 12 exclusive weapon skins and 15 new cards.

Most common FAQs when buying Back 4 Blood Expansion 1 Tunnels of Terror for PC in digital format:

It is a key that will allow you to download the game Back 4 Blood Expansion 1 Tunnels of Terror on your PC from official download platforms.

As of 04/08/2026, in United States, the best price we have found in our selection of online stores that include the key for Back 4 Blood Expansion 1 Tunnels of Terror on PC is €4.69.

The Steam Key format is what we always recommend due to its ease of use and higher security compared to any other format. You just need to redeem the key in your account to download Back 4 Blood Expansion 1 Tunnels of Terror to your game library. The account format requires more complicated steps and is more prone to errors during activation.

The only issue we’ve encountered in 13 years is receiving a duplicate key that doesn’t work. In that case, simply contact the store where you bought Back 4 Blood Expansion 1 Tunnels of Terror, and they will provide a new key. You can also contact us, and we’ll help you out.

Delivery times vary by store. For example, in the case of Instatgaming, Eneba, G2a, or Kinguin, delivery is usually instant or takes just a few minutes. These stores rarely delay game deliveries.

Other stores may take 30–40 minutes depending on game availability. On release days, delivery times may be slightly longer.

If you notice an unusually long delay, contact the store or us, and we’ll resolve it as quickly as possible.

At Gocdkeys, we only list the most well-known stores that have passed our quality checks. One of the most important factors is good customer support, and all listed stores offer it.

There have been occasions when those services were overwhelmed, which is why we also offer 24/7 customer support to help resolve any issues or questions.

In any case, we always offer a 100% guarantee, so you won’t have any problems, and if you do, we’ll resolve them as soon as possible.

Need more help? Use our FAQs.

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About of Back 4 Blood Expansion 1 Tunnels of Terror

Release date	04/13/2022
Users rating	0/5 (0 Comments)
Steam comments	Mixed Mixed (428 Comments)
Categories	Action
Tags Horror Action Violent Gore

Languages

English*, French*, Italian*, German*, Spanish - Spain*, Arabic, Japanese, Korean, Polish, Portuguese - Brazil*, Russian, Simplified Chinese, Spanish - Latin America*, Traditional Chinese, Turkish*languages with full audio support

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Buy Back 4 Blood Expansion 1 Tunnels of Terror CD Key for PC

Prices for Back 4 Blood Expansion 1 Tunnels of Terror Steam Key for PC (August 2026)

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About Back 4 Blood Expansion 1 Tunnels of Terror

How much does Back 4 Blood Expansion 1 Tunnels of Terror for PC cost right now?

Is it worth buying the Steam Key for Back 4 Blood Expansion 1 Tunnels of Terror now or waiting?

Which Back 4 Blood Expansion 1 Tunnels of Terror format should you buy?

Can you activate Back 4 Blood Expansion 1 Tunnels of Terror in US?

Why is there such an expensive Back 4 Blood Expansion 1 Tunnels of Terror offer?

So, which Back 4 Blood Expansion 1 Tunnels of Terror deal should you buy?

WHY SHOULD YOU BUY Back 4 Blood Expansion 1 Tunnels of Terror FOR STEAM?

WHAT WILL YOU FIND AT GOCDKEYS?

WHAT SHOULD YOU KNOW BEFORE BUYING Back 4 Blood Expansion 1 Tunnels of Terror?

REASONS TO PLAY Back 4 Blood Expansion 1 Tunnels of Terror FOR PC

Most common FAQs when buying Back 4 Blood Expansion 1 Tunnels of Terror for PC in digital format:

Need more help? Use our FAQs.

What do our users think of Back 4 Blood Expansion 1 Tunnels of Terror for PC Digital?

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Back 4 Blood Expansion 1 Tunnels of Terror

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