I highly doubt that Flight! will be an online only program. I have a Windows Live game already called Dirt2. It doesn't require that I only play online with other people, but it does store my progress and has achievements that can be seen by other players. Playstation Network also doesn't require online only gameplay. It does the same thing with achievements and trophies for meeting certain goals in your single player gameplay.I personally think it would be pretty cool. I'd love to see a "50knot gusting crosswind perfect landing" achievement, etc..Just my two cents.