One of the most memorable iDevice games I've ever played was the original Dark Nebula. It was short, but oh so sweet. Amazing game. The sequel was very fun, too, from what I remember.
If I'm not wrong, Dark Nebula 2 ended on a teaser for a third game... or was that the first Dark Nebula with respect to a second game?
Well anyhow, I checked the developer's page on the App Store, and they don't have anything else up... Where did they go? Did they make a new company? Such a shame if a company with a knack for making amazing iPhone games left the arena