Main Complaint: Filesize
I really do not see why a simple game like this should have a 6MB filesize. PLEASE compress your music and images more!
Apart from that, it's an alright game: the graphics are smooth and shiny, the machine works as it should, and there's a save/load game feature. No points for originality though; the game could have done with a few extra features, for example being able to play other casino-style games with the money you earn, in order to compete for a high-score against other players. Or you could have made it like one of those big, flashy, complicated machines you get down pubs, with loads of seemingly randomly flashing lights where no-one really knows how to play. That would be more original, as i have yet to see an accurate simulation of said machines. As for sound, I felt that the music was not really neccessary; it didnt contribute to the game at all. But then again, I wasnt really listening.
Overall, i'm sorry to say that I can't really give this more than a 4 out of 10. You've clearly spent time on it, and with a bit more thought you could create some really great games, hoever, this just doesnt make me want to play for any more than 30 seconds or so. There's nothing spurring me on, no reward, no variety. And call me biased, but if i'm going to be honest, if it was just 500KB (instead of the 6MB monster it currently is), then I may have given it a higher score. It just isnt worth it for what it is.