Terry has stated that, apart from serving God, the goal of TempleOS is to encourage C64-like hobbyist experimentation. He seems quite happy with outsiders writing software for his system, and has endorsed this MegaMan game on the TempleOS software page:

http://www.templeos.org/Wb/Home/Web/AppStore/AppStore.html#l...

  Supposedly, there is a guy on E-Bay selling TempleOS merchandise.  It's okay.

Heh, what a cool guy.

Definitely an interesting user.

"I write TempleOS programs and hymns for God."