Today, we have learned that Zipper Interactive, the minds behind Mag, Unit 13 (our review) and SOCOM is being shut down. The Seattle-based game studio is being closed is a “result of a normal cycle of resource re-alignment within SCE WWS. Zipper has complete all work associated with its most recent project, Unit 13 for PlayStation Vita. Zipper titles MAG, SOCOM 4 and Unit 13 will continue to be supported, including the new Daily Challenges in Unit 13.”