Looked at your site and it looks nice and your games look good. Hard to say why you failed exactly. But what I can say is that just because you start a business

Looked at your site and it looks nice and your games look good. Hard to say why you failed exactly. But what I can say is that just because you start a business does not necessarily mean it will be successful, even if you have a great product and proven team (see http://chrishateswriting.com/post/74083032842/today-my-startup-failed http://chrishateswriting.com/post/74083032842/today-my-start... as an example). You might have answered part of your problem in your own statement when you say you did not do any marketing. My suggestion, is to keep working at it (it appears you have a good talent at developing games), and start working to get the word out via forums, blogging, Twitter, Facebook, etc... Start building a fan base around your individual products.