[1] Caesar Cipher - http://www.itstoohard.com/puzzle/K6kEAF2i

[2] Morse Code - http://www.itstoohard.com/puzzle/gGntk6fz

[3] Hidden Characters - http://www.itstoohard.com/puzzle/iUSEdWUE

[4] Binary and Other ASCII codes - http://www.itstoohard.com/puzzle/6BZt4GPO

[5] Columnar Transposition - http://www.itstoohard.com/puzzle/5ucUgOnc

[6] Vigenere Cipher - http://www.itstoohard.com/puzzle/O8Gzj7dg

[7] Letter Numbers Cipher - http://www.itstoohard.com/puzzle/Y5dCFhqd

[8] Rail Fence Cipher - http://www.itstoohard.com/puzzle/Z2pPU92k

[9] Gronsfeld Cipher - http://www.itstoohard.com/puzzle/rjWyG1I8

[10] Atbash Cipher - http://www.itstoohard.com/puzzle/H4RhfAlC

[11] Pigpen Cipher - http://www.itstoohard.com/puzzle/w9CA8GdF

[12] Cardan Grille - http://www.itstoohard.com/puzzle/W2Wg5ccp

[13] Book Cipher - http://www.itstoohard.com/puzzle/TSBnk8Ks

[14] Tap Code - http://www.itstoohard.com/puzzle/Oa5Wz6l6

[15] Unown Pokemon Alphabet - http://www.itstoohard.com/puzzle/18CMYVaQ

[16] Boustrophedon Writing - http://www.itstoohard.com/puzzle/ZFBfMMtg

[17] Braille - http://www.itstoohard.com/puzzle/bcDvTn5C

[18] Keyboard Shift Cipher - http://www.itstoohard.com/puzzle/m7xa7h2m

[19] Barcodes - http://www.itstoohard.com/puzzle/Lp6ZaWdh

[20] Trithemius Cipher - http://www.itstoohard.com/puzzle/Y5u2ripz

[21] Dancing Men Cipher - http://www.itstoohard.com/puzzle/7yw7lTzZ

[22] Bacon Cipher - http://www.itstoohard.com/puzzle/c3VxogRk

[23] Navajo Code - http://www.itstoohard.com/puzzle/FIbDVJJQ

[24] Mirror Writing - http://www.itstoohard.com/puzzle/8EcS7moE

[25] Playfair Cipher - http://www.itstoohard.com/puzzle/yakmiTch

[26] One-Time Pad - http://www.itstoohard.com/puzzle/5t2ujg1F

[27] Sheikah Language - http://www.itstoohard.com/puzzle/onC9l7UP

[28] Slidefair Cipher - http://www.itstoohard.com/puzzle/A9CSTxqI

[29] Semaphore Code - http://www.itstoohard.com/puzzle/SVHUxUqc

[30] Fingerspelling - http://www.itstoohard.com/puzzle/z6TTOZne

[31] Bifid Cipher - http://www.itstoohard.com/puzzle/W09rPCZj

[32] Dingbat Fonts - http://www.itstoohard.com/puzzle/DRV3FHts

[33] Brainfuck - http://www.itstoohard.com/puzzle/GRvQuDtQ

[34] Human Languages - http://www.itstoohard.com/puzzle/SFf8hJ1W

[35] Phone Cipher - http://www.itstoohard.com/puzzle/jTzO4ttA

[36] ROT Ciphers - http://www.itstoohard.com/puzzle/tLkESKwd

[37] Route Cipher - http://www.itstoohard.com/puzzle/kRS201qw

[38] Kenny Code - http://www.itstoohard.com/puzzle/SXTG8kZP

[39] Audio Manipulation - http://www.itstoohard.com/puzzle/8tJ5pkx6

[40] Yin Yang Alphalines - http://www.itstoohard.com/puzzle/5sxaYxzk

[41] Chemical Element Symbols Cipher - http://www.itstoohard.com/puzzle/QKzj6pGT

[42] Scrambled Text - http://www.itstoohard.com/puzzle/whw9FFYj

[43] NATO Phonetic Alphabet - http://www.itstoohard.com/puzzle/A2SCtm3w

[44] Pig Latin - http://www.itstoohard.com/puzzle/lLrp2JdB

[45] Stereograms - http://www.itstoohard.com/puzzle/l5BPeMhM

[46] Tom Tom Code - http://www.itstoohard.com/puzzle/9L82podW

[47] Leet Speak - http://www.itstoohard.com/puzzle/rK9bKXAK

[48] Peak and Valley Cipher - http://www.itstoohard.com/puzzle/VeiDtXo0

[49] Image Steganography - http://www.itstoohard.com/puzzle/3ypMcshp

[50] Porta Cipher - http://www.itstoohard.com/puzzle/fEagRvEz

[51] RGB Color Codes - http://www.itstoohard.com/puzzle/VwLH25cL