I love fluxx. The version you play is pretty much pointless, there are some very slight differences in the versions but mainly it is just a matter of what kind of things you like as they basically just add flavor to the game. The ever changing rules make it a ton of fun. If you are on the fence I would say buy one with a theme that you like and give it a try, I would bet you will end up liking it enough to buy some other versions for a different theme.