1. Companies starting with W:

      Wadjet Eye Games
      Wanako Games
      Warner Brothers
      Watermelon Development
      Wayforward Technology
      Webfoot Technologies
      Wendros
      Western MicroData Enterprises
      Westwood Associates
      White Wolf
      WiiWare
      WildTangent
      WinGames
      Winning Eleven Productions
      Wizard Works
      Wizards Of The Coast
      World Forge
      WXP

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