"Opac's Journey has been a heck of a journey for us, and it's been an exciting learning experience for me. I had been toying with XNA since it came out, but until I hooked up with Carl and started working on "The Legend of Kilflame" I was only scratching the surface of the possibilities.
The finishing touches of Opac's Journey are presenting me with more learning opportunities which I hadn't yet gotten to with The Legend of Kilflame. For instance, saving games. I hadn't done any device I/O with XNA yet. I also needed to get up to speed with the GamerServicesComponent. That is the component which provides all the stuff necessary to connect you to XBox Live, store data in your profile and pretty much anything that deals directly with the XBox itself. Your XBox avatar stuff is located in that component as well. I haven't played with Avatars much, but maybe we have an avatar-based game in mind for later ?!"
Source: The Game Website.