Game: Aberrant (White Wolf Publishing, 1999)
My Experience: I was never a huge superhero aficionado, so I kinda slept on writing opportunities for Aberrant (and, if memory serves, I was busy with Vampire work at the time anyway). However, the WWGS freelance community at the time was smaller than it is today and somewhat well-coordinated, so I did get to do some playtest work, and ran a couple of pre-release demo games at the infamous Origins ’99.