Here is the changelog:

• Fixed a bug where you can't press the Resume button in the tutorial
• Fixed a bug where the options menu doesn't disappear when unpausing the game using ESC
• Fixed a bug where the item sprites were not aligned properly
• Fixed a bug where the black spots between item sprites rendered in the tutorial
• Added GZ-DOS, a little puzzle you have to solve to start up the game
  
• Improved the main menu