Buffy TVS RPG is exactly what it says it is in the description above.
Now, since I rate things based on money vs. value, I would like to say that this book is a must-have IF you are really into playing characters for the Buffyverse. The layout of the book is superb: it goes beyond the limit of what is expected in a game book. The material, however, is where this book falls short. For 20 dollars, you get exactly what you pay for, and no more. If you don't like Buffy TVS and you want to get this game to see what the Uni-system is all about, then it's an OK purchase.
The Uni-system would be good to play any game genre with, but this book only covers material for BTVS. This is a weakness. It is not a good thing for this book. Buy this book for Buffy, not for a generic system to play. At 20 dollars, it is too expensive to also spend hours tweaking it for your own personal use with other genres.
[3 of 5 Stars!]