Unit 13 is a third-person shooter game developed by Zipper Interactive for the PlayStation Vita. It marks the last game from the studio before its close.
Playing similar to the SOCOM series, with the ability to complete objectives in any order within each mission. Some missions will allow the player to take any approach to accomplish a goal, while others have certain conditions, such as requiring stealth. All missions can be played co-operatively, and each mission features an unlockable "Dynamic" Mode, which changes objectives and objective locations, enemy weapons and locations, to random values and points in the environment.