I know you want to make it community specific, but remember that most people are idiots and as as a community grows larger, it more closely resembles the total population. Therefore, user ratings tend to be worthless.
Most often, you adjust you perception of the ratings for that.
Like MAL for instance, a 7.2 is usually a good indication that the show is going to be pretty bad, even thought the system uses a 1-10 scale. This starts the become second hand knowledge just by visiting the site a few times.
I would like game pages to be accessed from tab up top like, "Games" or something generic and to the point like that. The first page could be a hub, showing all types of information about community info on various games (this week's releases, most played this week, what your friends are playing etc). It should allow you to also search through the catolog of games and find the game you want to know more about. clicking on the game can bring
Game's pages should be an aggregate everything about the game, that includes Buzzes, Blogs, Threads, Reviews, etc that people made about the game across the site. Also, the game's pages should allow you to create Buzzes, Blogs, threads, etc right from the page - making the game page feel like more of a fan club. It could also be interactive by having graphs of the hours spent in the game this week, amount of trophies earn, number of people that own the game of PF over time, what age group owns this type of game, or other info if you can think of.
Pulling news from sites like IGN would be cool, i definitely wouldn't mind that. That could make the game page more than just a fan page, and become a hub for a game's news. I don't know if you can just pull video and pictures down from youtube and google about a game, so this might get a little be more wiki like, but having people able to post videos and picture from Youtube and google would be great. I'm sure your guys are look to have easy moderation on this, but i think something like that would be a great feature for the pages.
Umm...marking games as favorites? Yeah, for sure. I'd be a good idea to be able to do that from you profile as well.
And as for Ratings - 1-10 scales, ALWAYS. None of that 3,4,5 stars BS. Keep it universal!
Thats all i gots to say about that. Hope that helps.