I used to post like crazy in the Forum Games, but then I eventually got bored of them. I may head over and make a post or two in that section once in a while, but not everytime I sign in.
Like: It's a place that almost always has activity. You can come to DGN at 2:00am, and the Forum Games may be the only place where there is activity. I also like that it is nice to go enjoy a forum game after a long day of posting in the "legit" boards.
Dislike: The Top Posters list is a little misleading. You can get on there from spamming the Forum Games, even though post count is disabled. Top posters should be the people that post in what I call the "legit" threads, because I don't count the Forum Games posts as "posts" as much as "turns." Not really a reason to dislike the board in general, but hey; there's really not much to dislike about the Forum Games.
If that section were to be removed, it wouldn't affect me as much now as it would 1 month and a half ago. I hardly ever post in that section anymore, and it's pretty much only the rating games if/when I do. But, I know other people would be affected by it.
All in all, I think the Forum Games are a great addition to the forums. It is a great place to just go and chill, if you don't feel much like posting.