Mage The Ascension was a fairly groundbreaking game, to me. Just like the GURPS version of Vampire the Masquerade, Steve Jackson's shot at transporting a White Wolf game to their system just did not seem to measure up, which was a shame, as integrating that into other areas of GURPS would have been pretty cool. An example of an attempt that failed.
2 out of 5
The above link is the complete list of post from this blog, updated each week, if you want to browse like that rather than search.
This list is quite long, and has become longer than I ever thought so in the interests of loading speed it is now situated elsewhere.
Similarly I am working on a simple website to browse by author that combines Free SF Reader and Not Free SF Reader that is extremely bare bones now, and can be found at the second URL above.