Last week, rumors circulated that Zipper Interactive was facing closure. Sony has confirmed that the developer has been shuttered.
In a press statement, Sony announced, "Sony Computer Entertainment can confirm the closure of Zipper Interactive, a Seattle-based internal game development studio that has been part of the global development operation of Sony Computer Entertainment Worldwide Studios (SCE WWS).
The closure is a result of a normal cycle of resource re-alignment within SCE WWS. Zipper has completed 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."
Unit 13 was the final project completed by the developer, which was a PlayStation Vita launch title.