As the other main collectible in Metal Gear Solid 5: Ground Zeroes, finding all of the cassette tapes will help to fill in the game's backstory and will also award you with the Information Trophy/Achievement.
Some of the cassette tapes are hidden away, whereas others are unlocked by completing specific challenges, but we've tracked them all down to present their locations on page two of this handy guide.
Looking for more help with Metal Gear Solid 5: Ground Zeroes? We also have a XOF Patch locations guide.
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