Strategy Informer  

Overkill Entertainment has announced it is working with Valve on an "in-depth collaboration" involving Payday: The Heist and Left 4 Dead.

"As perceptive gamers will have noticed, several hints have recently been dropped into Payday The Heist, which has led to various rumors," commented studio game director Ulf Andersson.

"We are excited to be able to confirm that an in-depth collaboration between Overkill and Valve is currently in production. We are working on a very cool blend of PAYDAY and Left 4 Dead. I am sure it is so exciting that it will have some players check into the hospital before we are done."

Related games: Payday 2 (PS3), Left 4 Dead 2 (Xbox360), Left 4 Dead 2 (PC)