It is an interesting solitaire, and the ambientation of the game is superb.
Unfortunately, the text-based interface is unfriendly and cumbersome; and reduces the desire of trying another round. Maybe more options in screen (enough to choose slot or cancel with just one selecion) and removing the slide-in animation would help.
Overall, it is a good and interesting game (congratulations!), but it is a little rough around the edges.