Anyone Have This Mod?

I want to install a mod so I'm looking for feedback. 

https://modthesims.info/d/659091/empty-worlds-with-custom-names.html 

Has anyone installed this and had any issues? Also, does it just add the extra worlds to the game, or does it wipe out everything from the current worlds?

I'm also open to suggestions of the same type of mod from other creators.

PS. SRSLY's website s down for maintenance, so that's a no-go.