Check out version 2.0, which has superior encryption to this: https://scratch.mit.edu/projects/165503272/ Just type in a message and then press enter. The list that appears is the encoded form. Same for decoding. Click the 'New' button to encode/decode [again]. And please click on that little heart. Sample: }42(%}`%41%"%~>]`}`%4%a2)>+32,2+~4_`3+%`2`,`,`%(.%,4++42<a' The idea was mine and if it seems that I copied, it is a coincidence. Everyone is free to use the encrypt/decrypt block (that is why I made a reporter value entering part in it. You will need to import the lists, though. As well as give me credit. Shared from Scratch 2 Offline Editor Limitations: 1. Does not recognize between uppercase or lowercase alphabets.