I couldn't get the browser player to work but the game sounded interesting so I downloaded it. I think you really have something here that is quite enjoyable. A tool-tip that explains each building when you hover over them could be useful instead of opening the help tab every time. But the longer I played, I could remember what each one does. The AI gets a lot tougher which had me at the edge of my seat. Good job on making the game, one of the better ones I've played so far.