To me that sounds quite awful, but then again the amount of downloads is good. What is your site and whats the program that you are offering. It is basicly impossible to say if there is something wrong with it as it all depends on the traffic that you have – my god I could need some good traffic for change as it seems I have only two programs that convert and the others are visited, but hardly downloadet and certainly not played with real money.
Ok, I took a look at your site and from what I could see I think the people you are getting to your site are mostly fun players – it seems to be the idea of the site so basicly I am not suprised that no real money hasn´t been wagered.