{
  "disc_number": {
    "old": "1"
  },
  "disc_title": {
    "old": "Metal Slug 4"
  },
  "edition": {
    "new": "Metal Slug 4/5",
    "old": "Original"
  },
  "exe_date": {
    "new": "2005-04-21",
    "old": "2005-04-20"
  },
  "serial": {
    "new": "SLUS 20971",
    "old": "SLUS-20971"
  },
  "title": {
    "new": "Metal Slug 4",
    "old": "Metal Slug 4 & 5"
  }
}