 Space Run is a tower defense video game developed by PassTech Games and published by Focus Home Interactive . It was released for Microsoft Windows on June 13 , 2014 , and later released for OS X and Linux . The player assumes the role of a cargo ship pilot , and must build modules and weapons to defend their cargo from attacking ships and other hazards . The game received mixed reviews from critics , and a sequel was announced in March 2016 . 
