Yep, DNF has been in production way longer than Max Payne. Sorta reminds me of Prey. Anyone remember Prey's 4D? You could supposedly have a seemless room where you walk out the west side and enter back in the east using special portals. Sorta like what Q3 has now where you can look into a portal and see people in a different room, except more interactive. Too bad Prey turned into vaporware!