I can not stress enough how much we love this game.  This was our first version of Fluxx, and although we have played (and own) several other Fluxx versions since then this one still remains everyone's absolute favorite.  My mom is obsessed with it.  My sister and I are obsessed with it.  My nieces (even one who can't read yet) are obsessed with it (although the youngest one needs a lot of help obviously).  It is one of 2 games that goes on every vacation with us.  Some versions of Fluxx have odd cards/rules that take a while to get used to (like the way that the zombies are used and passed around in Zombie Fluxx) but this game is straightforward and fun.  I also like that it is a quick game (we've had games as short as 2 minutes, but even our longest game was only about 15 minutes long.....although that being said we are addicted to it enough that we will play it would 2-3 hours straight).