Besides the last couple volumes of Case Files (because I'm lazy and because reading through the scans without badgering people to help me figure out what chunks of Japanese mean like I did for CCC/Mahoyo/GO is crazy levels of effort), I can say I've read/played everything Type-Moon's put out.

I have wasted far too much of my life reading about this damn Japanese gamer's fantasyland. 

I have friends who make fun of me by saying "Mahoyo trilogy".