Obviously most any good, descriptive name would already be taken, so this may end up being an exercise in futility. The most important things, IMHO, is to get word/s that describe what the site is, such as game, resources, content, media, etc, but again, good luck. Unless you have a recognizable name already that people can associate with, you'll spend some time searching for available URL's and variations. Try to get a .com if at all possible, since it seems that these still have preference in search engines.
That said, there are other things as important as the name and have to do with page names and titles, relevance of text, SEO technique, etc.
Sometimes I find it preferable to actually make the site before settling on a name, as that doesn't restrict me to a particular theme or direction.
Good luck.
Brian.
I am the underground.