Some info on that map changing

Oke that map changing modding or whatever you call it!
That is done by cheat engine right?
or is there just a glitch way?
You join a game of tut leave it make your own tut oke blabla but someone had to start this? and that guy used a UCE?

If it's done by Cheat engine may I know were I can find that UCE?
if it's private than nevermind!

than just the user that found this out make a room with GM mode and than EE ship base or whatever snd td map