Isn't he the chap with those funny-tasting crisps? I'm sure he is. Hey, perhaps he's really a crisp magnate of millionaire proportions. Coo.
Anyway, you get to fly a hot air balloon over some hills, rivers and huts. The idea is to avoid any other airborne obstacles and bomb the huts. The scenery scrolls around you as you drift along (with a bit of control over where you're going). You land at friendly bases, bomb unfriendly people on the way, and generally be upper-class and rich about the whole thing.
This is all well and good, but you don't actually get to do a great deal with Phileas Fogg's Balloon Battles. It's a novel idea but not a particularly playable game. In fact, I'd go so far as to say that it's about as fun as eating 3.99 worth of those smelly crisps.