Guns Up! (stylized as GUNS UP!) is a free-to-play action strategy game developed by San Diego Studio and Valkyrie Entertainment and published by Sony Computer Entertainment for the PlayStation 4. It was originally released on December 5 2015. A Windows port was later released on February 5 2018 through Steam. A mobile port licensed by Sony for iOS and Android developed and published by NHN Bigfoot with Valkyrie's involvement was released on April 1 2022. It received mixed reception from critics who commended its accessibility but criticized its lack of complexity and microtransactions.