1. Companies starting with U:

      U.S. Gold
      Ubisoft Montreal
      Ubisoft
      UClick
      UFO
      Ultrasoft
      Unicorn Games Studio
      Unikgame
      United Microware Industries
      United Software of America
      Universal Card Systems
      Universal Interactive
      University Of Southern California
      Unreal Voodoo
      Updaters
      UPlay
      URSE Games
      US National Guard
      Uze

      Note: bolded names indicate companies that released a game within the last twelve months.