That background is.... funky. The color scheme seems a little off too. Not very attractive.
Perhaps the most obvious and glaring omission ...
Who do you design your games for? Who do you sell them to? How do you sell them? How much do they cost? Where are they available?
It seems like you did put some time into it, but there are many things you need to improve on. First is the look, it just looks like its from 10 years ago, just not very modern looking (definitely not web2.0). Also, there are many issues such as mentioned before with the text in images (you get no benefit from this and it makes your page load slower).
I think the best thing to do would be to learn html. Simple html is pretty easy to understand and once you know it your sites will be better coded and maybe look better too (especially if you learn some css too).
here are a couple of specific suggestions:
get rid of the gradient background, doesn't look professional
get rid of or modify the microsoft wordart banners (everyone knows where its from, also doesn't look very appealing)
dice image doesn't match the rest of your site (the color is way off)
maybe put some screen shots of the games/projects you have
make the email link on contact us page clickable
I am also not fond of the scrolls
try to pick a color scheme and try making most of your site in these colors/shades of these colors