The Signature Edition version includes
- Region free copy of Alex Kidd in Miracle World DX (including manual and keyring) on Xbox Series X / Xbox One.
- A numbered certificate featuring the dev's signatures.
- Three exclusive enamel Alex Kidd pins featuring our hero.
- A Jankenpon (rock/paper/scissors) card game featuring characters from Miracle World.
- Original companion art book detailing the art behind Alex Kidd in Miracle World DX.
- Alex Kidd's medallion and a felt money bag.
- The original Alex Kidd in Miracle World DX soundtrack on CD.
- Collector's box featuring alternative artwork.