A Back 4 Blood Expansion 1 Tunnels of Terror Steam Key — also known as a CD Key or digital code — is the official activation code you redeem on Steam and keep in your library permanently. From €2.99 (no fees) at Steam · 9 verified stores, 12 offers in stock · Updated 34min ago.
Final prices with fees and discounts applied
Back 4 Blood Expansion 1 Tunnels of Terror for PC starts at €2.99 (no fees) at Steam, a Steam key.
With 12 offers across 9 stores there is enough competition for the price to move, so the gap between the cheapest and the rest is worth checking before you buy.
That puts it 30% under its average of €4.25 since 2023, so today is a better entry point than most days of its life.
That €2.99 (no fees) key is at its usual price: no bargain, no spike.
Worked out from 2,215 daily records of the Steam Key for Back 4 Blood Expansion 1 Tunnels of Terror across 17 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.
By format: Steam Key from €2.99 (no fees) and Steam Gift from €4.63 (€4.92 with fees).
6 of the 12 offers work on US — the Global ones plus the ones issued for your own region.
One listing is worth ignoring: the Steam key that Gamivo has at €79.36 (€83.13 with fees) is more than 27 times the cheapest offer and is not what this game costs. The number to work from is €2.99 (no fees) at Steam.
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Back 4 Blood's first expansion gives players a good reason to reinstall the shooter, but with it intending to expand campaign replays rather than offering... Read more
Back 4 Blood's first major expansion deepens the roguelite elements of the game, but still stumbles on issues that have been present since launch. Read more
The Back 4 Blood - Tunnels of Terror expansion introduces some new quality content such as the Ridden Hives, new Cleaners, and new cards that... Read more
Despite adding new locations, new cleaners, and new warped ridden to the fray, Back 4 Blood: Tunnels of Terror doesn't feel substantial enough to warrant... Read more
Turtle Rock added interesting content in Tunnels of Terror. Ridden Hives offer a compelling challenge, new Cleaners are somewhat worth experimenting with, No Hope is... Read more
It’s great to see new content in Back 4 Blood, it’s a shame the developers opted to make the new areas so difficult. Visually, these... Read more
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