Dang, how did I miss this one? Anyway, this was a pretty good game to play. It certainly looks like a new game instead of two years old. Of course, it's been awhile since a new FlashPlayer came about anyway. It was neat to have this design. I liked how it was fairly easy to understand. I thought you didn't burn fuel by going somewhere you'd already dug, but you did.
You don't seem to lose any on land, though. I liked all the little sounds that were everywhere. It even has kind of a nice name. I just don't have much of an understanding of how I go deeper. It must be something that happens with upgrades.