Yes, it's encypted. And there's a tool inside the game (wich can be also used by a mod) wich allows you to uncrypt that file.

But you need a key, a password.


(And... Well, actually also all other lua files are unreadable if you just try to open them up with the notepad. Because they are compiled.

But that's a way to decompile them, and it's also quite easy.)



We are talking about the Secret Room file here:

http://psteamcommunity.yuanyoumao.com/app/246070/discussions/0/613936039468286964/