The release string "-SPSX--COD.Modern.Warfare.2-CUSA34029-Campaign-..." refers to a specific unofficial backup or "scene" release of the PlayStation 4 version of Call of Duty: Modern Warfare II
Option 3: Full scene-style label (like for a tracker or NFO) -SPSX--COD.Modern.Warfare.2-CUSA34029-Campaign-...
ID (CUSA34029): The unique identifier for the PlayStation 4 European/International version of the game. The release string "-SPSX--COD
CUSA34029: The specific Title ID for the European (EU) retail version of Modern Warfare II on PS4. Title IDs are unique to every game and region. -SPSX--COD.Modern.Warfare.2-CUSA34029-Campaign-...