That's a lot of questions
Welcome to webmaster world.
What sort of games is it you develop? are they browser based, or the sort of games you install and run from your PC?
Getting many more game titles may work well for you. Users may come to your site because you offer a selection. Think of it as a collaboration with other developers. You may wish to contact other small scale game developers with this sort of agreement in mind.
Getting traffic will never be an easy task. On the web it is all about getting propel to link to your from their websites. Links are votes. If a site links to you it is in effect telling the search engines it likes your site. This will eventually work to your favour and will help to increase your rankings.

Thanks,
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