Back 4 Blood surpasses 10 million players, 'Tunnels of Terror' expansion launches April 12 - Gematsu

Back 4 Blood’s first major downloadable content expansion, “Tunnels of Terror,” will launch on April 12, publisher Warner Bros. Games and developer Turtle Rock Studios announced.

ArtStation - Back 4 Blood DLC: Tunnels of Terror (2022)

Back 4 Blood's First Expansion, Tunnels of Terror, Available Today

News - August, 2023

Every New Player Card in Back 4 Blood: Tunnels of Terror DLC

Back 4 Blood: Tunnels of Terror review --- Bloody useless

What should the next Back4Blood be called? Back4Blood 2

News - August, 2022

BACK 4 BLOOD: TUNNELS OF TERROR DLC Review: A Good Start — GameTyrant

Tunnels of Terror brings more Cleaners and new Ridden to Back 4

Back 4 Blood has seen 10 million players since release, first DLC

News - August, 2022

Back 4 Blood, Tunnels of Terror #8

Back 4 Blood is 10 million players, the expansion Tunnels of

Back 4 Blood's First Expansion, Tunnels of Terror, Available Today