• PRAELUDIUM 1
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PRAELUDIUM

If you enjoy thrilling stories filled with riddles, codes, unknown symbols, ancient languages, conspiracy theories, and many other exotic secrets and mysteries, SEALED BOOK PROJECT is created just for you.

✔️ PLAY 100 % FREE ✔️

PRAELUDIUM is the first multilingual adventure puzzle book-game of the series of interactive CHALLENGE BOOKS suitable for people of all ages who love the excitement of reading Mystery / Thriller / Suspense / Adventure novels.

The BOOK for readers, who love CHALLENGES!

⚫️ THE STORY

In the middle of the twentieth century, a representative of the two mightiest driving forces in society – the Church and Science – publicly announced that he had created something that had until then been considered unthinkable and impossible.
To the day he died this person never retracted his claim; moreover, many authoritative researchers in the field assert that this artifact does exist, even at this very moment, and is one of the most closely guarded secrets in human history. Where it is now and whether it has been used is anybody’s guess…
The story you are about to read offers just one possible version of what might have happened and may even be happening right now.
All places mentioned in PRAELUDIUM are real and exist to this very day.
Any resemblance to actual persons and events...could be accidental.

⚫️ What is a CHALLENGE BOOK?

In our CHALLENGE BOOKS, we offer a unique concept with which we want to challenge the readers by offering them the opportunity of personal involvement in the action by means of some special options for solving numerous puzzles, decrypt embroidered codes, rebuses, and ciphers, decrypt graphic images, musical and visual riddles that are an integral part of history.
Thus, adding a game element to reading, the reader creates a sensation that can not be compared to anything else. Specially created for the book - sounds, images, music, and graphics reinforce the overall effect and give a specific and different interactive experience, which is a pleasure for both intellect and perceptions.

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Reviews (17)

Arr. O. Sep 10, 2020     

Interesting story, although the text could use some proofreading. There are a few typos or weird expressions here and there, but nothing too serious. Regarding the riddle answers, I thought the game was unfair at times. At certain points I knew the solution, but the game wouldn't accept it because of the format. At some other points, the solution wasn't clear even after reading all the hints, and I had to ask for the complete answer.

Sve. S. Aug 21, 2019     

This book is a new experience to me. I have to say I like it a lot - the idea, the caharacters, the story and how the application itself is made. The settings for the font size and paper color are a great idea. The questions/riddles are quite difficult, but I must admit my lack of experience in this type of riddles.

Kol. K. Jun 10, 2019     

So exciting!!! This app is great for all book fans, who love mysteries and riddles! The story is interesting, well written and pictures, and the music make the reading experience just great! I love it and can't wait for the next parts of the story! The app is friendly and easy to operate with! Great job!

Ste. B. Jun 22, 2021     

Excellent innovative game and great storyline! Although I'm currently stuck with what I suspect is the last puzzle... have tried every combination I can think of of your home city and the building in question in multiple languages and alphabets including historical names with no luck...

Zel. C. Jun 21, 2019     

What a thrill! The story is great and I liked the characters very much. The suspense never lets up. Trying to solve the puzzles is a challenge worth the time spent researching. I can't wait for the sequel.

Ama. K. Feb 27, 2020     

Really interesting and absorbing ARG type app. I loved the background music which enhances the atmosphere of the story. Can't wait for part two!

Mat. N. Jan 31, 2021     

Amazing experience, really enjoyed the narrative and the riddles! Go try the second chapter, Codex!

Eli. V. Jun 17, 2019     

surprisingly good. actually, truly gripping and entertaining

Mar. C. Jun 20, 2019     

Awesome, thrilling read, keeps you on your toes

Sve. U. Jun 22, 2019     

awesome, creative and intesting.

Nik. N. Jul 29, 2019     

great story and challenges!

Ves. I. Jun 19, 2019     

Gripping story and great fun!

Boy. N. Jun 25, 2019     

Interesting story narrated very well.

HAR. H. S. May 11, 2022     

It's really amazing

Des. M. -. R. t. O. Nov 9, 2019     

Interesting and will recommended everyone my friends. Lovley story.

Yul. L. Jun 13, 2019     

Is the best book ever. had so much fun.

Nad. S. Jun 26, 2019     

Love it!