invent codes, ciphers, hidden messages, and more! : a beginner's guide
"Communicate in a language only you and your friends can understand! Expert language creator David J. Peterson (inventor of languages for Game of Thrones, the Marvel Universe, and more) guides you as you create your own secret languages, codes, ciphers, and hidden messages. From simple cyphers to entirely new alphabets, master the skills of secret communication, whether it's written, drawn, or spoken"--Provided by publisher.
