he's right, for most games site, alexa rank works out very well... 90K-120K would be 4-5K uniques per day.
however, a majority of that is to his mainpage, probably little goes to YOUR particular category.
For now the only statistics I have are located at http://t.extreme-dm.com/?login=uwgames, average about 4000 uniques a day and 15,000+ page views, I know they are not the most reliable stats, but it atleast gives you an idea. My stats are somewhat low right now as I haven't had time to update the site much lately, but I will be updating soon.
As of now I do not have category specific stats.
And Kylecl I don't believe most just go to my mainpage, I am pretty sure there are a lot to the categories, as that is one of the only was to get to the games.