Project Blue Book: Hidden Mysteries


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Games purchased through the Legacy Games store are available as DIGITAL DOWNLOADS only. If you’d like to purchase a physical copy, please visit your local Walmart store.

It’s 1952, and the U.S. Air Force is operating a top-secret investigation: Project Blue Book. As a newly recruited agent, it’s your job to uncover the truth behind these real declassified UFO sightings. Test your observation and investigation skills in this out-of-this-world hidden object adventure!



  • Challenge your observation and deduction skills!
  • Experience chilling mysteries based on real declassified UFO investigations!
  • Solve hundreds of hidden object scenes, puzzles and minigames!
  • Investigate alongside Dr. J. Allen Hynek (played by Aidan Gillen from “Game Of Thrones”) and Captain Michael Quinn (played by Michael Malarkey from “The Vampire Diaries”)!

About Project Blue Book: Hidden Mysteries

Project Blue Book: Hidden Mysteries is the official hidden object adventure game based on HISTORY’s hit drama series PROJECT BLUE BOOK, created by David O’Leary, and executive produced by Academy Award and Golden Globe® winner Robert Zemeckis. The series explores the historical Top Secret investigations into UFOs conducted by the U.S. Air Force between 1952 and 1969.

System Requirements

  • OS: Windows XP/ Windows Vista/ Windows 7/ Windows 8/ Windows 10
  • CPU: 2.4GHz
  • RAM: 2048 MB (2 GB)
  • DirectX: 9.0c

9 reviews for Project Blue Book: Hidden Mysteries

  1. steven slayton (verified owner)

    like it ss

  2. Mycou

    I was so excited when this game finally was available for purchase. I clicked on the link in your newsletter and I was taken to Microsoft Games. Installed and started playing. I am soooo disappointed. I’ve been playing HOGs for a long time and this game is for someone that hasn’t really played HOGs. I proceeded to log out and lost all the progress I had made. Apparently you have to physically SAVE the game. I wish I could get a refund, but since that’s probably not possible, I’ll give it to my granddaughter, who I hope, will enjoy it. At least I only paid $ 6.99. One suggestion….provide temp access as Big Fish Games does so that individuals can play a game for a limited time, say 60 mins, to decide if they would like to purchase it.

    • amanda (store manager)

      Hi Mycou, thank you for taking the time to leave a review and suggestion! Hopefully your granddaughter will enjoy the game, but either way we would be happy to provide you with a refund. Please contact us at with your order info so that we can process it for you!

  3. Micki (verified owner)

    This game moves quickly and isn’t too difficult. It’s a good one to play after a long work day. Some scenes are a little repetitive in finding the objects, but overall, I’ve been enjoying it. The historical tie-ins are fun.

  4. Arthur (verified owner)

    Sorry – but of all the Legacy games I’ve purchased either online or at Walmart, this is by far one of the worst. I wish I had not purchased it. Unless this is the first hidden object game you’ve ever played, skip it. Sad disappointment.

  5. Victorina Farrally (verified owner)

    this one was fun to play

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