This has to be up at the top of my husband's and my favorite Fluxx games (we own nearly all of them). There are clever references from Star Wars, Star Trek, Doctor Who, Hitchhiker's Guide to the Galaxy, and more. But it's not the references that makes this our favorite Fluxx but the game mechanics and some of the special action cards. I don't want to spoil it, but Brain Transference is my favorite. It stays fresh and fun when we've over played all the other Fluxx varieties.