My suggestion would be to find other forums or the like that deal with that game and post messages on there, possibly linking back to your site. Point the site out to a few people once you get it done.
My second suggestion is to stay away from link farms which is how a lot of people try to get their site listed on search engines. A lot of search companies are now penalizing for those sites.
If you do not know what a link farm is you can read about it here:
Webopedia: Link Farming