Play the game on Newgrounds or on itch.io.
This game is played by unlocking books to solve riddles. Several icons are locked and need to be decrypted to enter. Read up on the ciphers and crack the codes. Start by reading the Read Me file.
Password number 1
Password hint: NOVMO +5
Cipher: Caesar's cipher
This book is unlocked right from the start. You learn that you need to change the letters in the password hint by following the numbers. NOVMO +5 means that you jump five steps forward.
A new icon appears on the device, called I SEE YOU. Open it up, click on I C U (i see you) to unlock the next book.
Password number 2
Password hint: cocododexox
Cipher: Robbers' language
The next level is placed in the Expense icon. Read the book and find out how Robbers' Language works. Remove the correct letters from cocododexox to find the password.
At first glance, it looks like someone has made a budget document. But this is actually the order in which you need to feed the cat in the software Neko. One bird, then two mice, one fish and finally two birds. Do that to unlock the next book!
Password number 3
Password hint: WYOESATOAY
Cipher: Rail fence cipher
The next level is placed in the Datebook icon. Read the book and find out how Rail cipher works. You might need to write this down.
W Y O E S
A T O A Y
Click to reveal the password
You find out that you have to click on the Panic Sardines icon when the two final numbers add up to 13. "Panic Sardines" is an anagram for Princess Diana. Head over to the Dianameter and wait until the final two numbers add up to 13. This might take a while, if you're unlucky. Take the moment to think about the late princess. When you succeed, book number 4 will be unlocked.
Password number 4
Password hint: THTIHYAICMNEDOG
Cipher: Rail fence cipher, continued
The next level is placed in the Address icon. Read the book and find out how Rail cipher works when multiple rails are being used.
T H T I
H Y A I C M N
E D O G
I SEE YOU has changed and flipped around! Head into the I SEE YOU icon and click on the correct letters once again. I C U, to unlock the fifth book.
Password number 5
Password hint: Weird symbols
Cipher: Pig pen
The next level is placed in the Mail icon. Read the book and find out how Pigpen cipher works. The key to solving it is in the I See You icon, but mirrored! Once you've translated the symbols, you get the password.
"Never forget the date she died". Who? Princess Diana, of course! Y * D + M means her death year, day and month. 1997 * 31 + 8. Use the in-game calculator to solve it, and unlock the next book! (Your own calculator won't do the job!)
Password number 6
Password hint: 435221113152431212
Cipher: Polybios
The next level is placed in the Graffiti icon. Read the book and find out how the Polybius cipher works. 43 turns into o, 52 into k and so on. Once you've translated the numbers, they spell out the password.
The sad woman did it! Keep accusing her! Head into the Catch the Criminal game and just keep clicking on the sad woman. After a few clicks, you unlock the next, and final book.
Password number 7
Password hint: KBPBLOCFOB
Cipher: Playfair
You need a keyword to solve the Playfair cipher. A new icon has appeared, telling you that the keyword is what people call the owner. In the Read Me file, you can see that he's called the CRYPT killer, with the word "crypt" being highlighted.
Start by drawing out a 5x5 grid and write C R Y P T on the top row. Follow by filling out the rest of the grid with the remaining alphabet. It should look like this:
C R Y P T
A B D E F
G H I/J K L
M N O Q S
U V W X Z
Congratulations! You beat the game!