If you look at the basic elements, Payday: The Heist and Left 4 Dead are rather similar. Both pit teams of four against hordes of enemies, with objectives to reach and both feature a metric shittonne of bullets.
That seems to be all that was required, as Overkill director Ulf Andersson confirmed that the studio is working with Valve on a crossover project.
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.”
Ulf Andersson, Overkill
Do zombies have banks? Perhaps a guard of Tanks will be protecting the vault? We have no idea how this is going to work, but out interest is certainly peaked.
By Stephen Heller - Bio