The first couple rooms are written well, but I'm seriously frustrated. There are exits, but not visible, even when they SHOULD be visible. For example, in the first room you can climb up out of the plane. So there should be a visible up exit, or climb, or climb on seat, or something. But there's nothing.
So I made it to the second room, and once everything started telling me "I don't understand that command", I gave up in frustration and quit.