Payday 2 has been pretty successful, garnering generally positive reviews and apparent financial success. The team at Overkill is now thinking about what they might do for a sequel, and the oft-requested (and obvious) cops-and-robbers versus mode is on the table.

Eurogamer reports that in a note to investors, publisher Starbreeze said it had sold 1.58 million copies so far. That's enough for the company to call it a success, even before the planned year of downloadable content.

Game director David Goldfarb says the team is considering adding a versus mode, in which one team plays as the cops, but it would be such a big change that it seems more likely for a sequel.

"We've talked about it, and I'm sure we'll continue to talk about it," Goldfarb told Rock Paper Shotgun. "The one thing, without going into too much detail, is we made a lot of decisions on this game that were ambitious and risky, and one of the reasons that we were able to get it out on time and make it generally a good game is that we didn't entertain a lot of stuff that was outside of our core focus, and the core focus is not versus. The core focus is co-op. So when we revisit whatever we're going to do for the next one maybe that'll change. When you make a versus game it puts you in a different place, and then your attention is kind of split."

Part of that focus on co-op is that he feels it took them a few tries to even get that right. He said the heist concept was "imperfectly realized" in the original PayDay, and the second one is simply "closer to the fantasy in our heads." It's taken some time to make it this far, so adding an entirely separate faction with its own distinct goals seems like a daunting task for the small studio.