Great card game, with completely different style of play and rules than you will be used too.  There are many types of Fluxx games available, but when I saw Star Fluxx, I didn't even consider buying any of the others (OK, maybe the Monty Python, but I think the non-trademark style of the cards makes Star Fluxx so fun and hilarious).  This was my first time playing Fluxx and I didn't have any problems understanding the rules, but I do find myself forgetting some of my keeper powers, but thats just the fun of playing, knowing you may have been able to win last round if you had done x, y, or z.  Of course, since there are many pathways to victory, there are also many pathways to have victory snatched from you, completely unrelated to your own stupidity.  Most Star Fluxx games for us become a battle of attrition, to see how long you can play before someone gets lucky enough to have the right keepers, without anyone being able to foil their victory.