I really liked the music on this. I want to try it on my IBM PC at some point (it is stored in a few boxes now so i can't at the moment) and see how it looks and sounds on a real CGA monitor and IBM PC speaker :-).
I played a few rounds though i'm usually getting killed by the AI. I haven't figured out how the AI works yet :-P (does it "look" at what you typed as if it was someone standing over your shoulder playing a 2 player game on the same machine and tries similar numbers?)