You can paste your google analytics script here (or any other js scripts you need outputed)
This ad will appear right before the footer in the homepage, the widest ad you can get will probably look best here.
This will appear between news on the homepage and other places, responsive ad would fit the most here, but one with around 650px width should look fine too.
This will appear under header in game page, the widest and thinest or responsive ad will look best here.
This will appear in the top right corner of news index page, responsive or ad with around 350 width will look best here.
This will appear before comments in the news page, ad with 550px width or more will look best here.
This will appear in the games and genres index page, responsive or ~1000px width ad will look best here.