These are the ones I play the most with

Corruption Cards

Offi's Doom XP

KetchupV4 by Sgt Mark IV

Also try messing around with Obsidian Map Maker to create your own custom maps, it's loads of fun

There's a new one out called torrentlite(dot)org

Seems to be a pretty direct copy for the most part

Just checked the site, the top section for browsing popular movies is actually better on this site than RARBG imo