I have beta-tested numerous games. However, I stopped after
1. Getting older.
2. Realizing I was working for free.

I have played practically every DwarfFortress-clone, and been disappointed by nearly all of them. However, the open, honest, and informative feedback from Team Radiant convinced me to play a game that is not only pre-final release (not just 1.0), but to play the alpha after owning it for nearly 2 years.

I'm also a engineer/programmer and have made some crap video games on the side.