Payday: The Heist studio Overkill Software and Valve Software are working on ... something together. What that something is remains to be seen, as Overkill game director Ulf Andersson only described the collaboration as a "co-operative initiative" between the two companies. We do know that it'll involve both Overkill's Payday: The Heist and Valve's Left 4 Dead – two team-focused four-player co-operative romps (enough hyphens for you?).
"We are working on a very cool blend of Payday and Left 4 Dead," Andersson wrote on his company's official site. "I am sure it is so exciting that it will have some players check into the hospital before we are done." Oh, hospital, you say? We see what you're doing there, you crazy Swedes you!
Andersson apparently couldn't help himself, and added one more zombie-themed quip. "Keep an eye out for more on this infectious and developing story." We know at least one guy we won't be letting into the safe house.