This DLC contains:

• A hand-drawn map by Hauke Vagt, as a file to print yourself a poster with and as a 16:9 file to use as a wallpaper.
  
• The cover art of the game, as a file to print yourself a poster with and as a 16:9 file to use as a wallpaper.
  
• 3D files to print a figure of Master Key's protagonist.
  

Warning: this DLC does not contain any in-game content for Master Key and is not required to enjoy the game.