So, a new wrinkle to the IGN thing, at least for me. My trial finally ran out today so I decided to subscribe for a full year. When I did it, it gave me another free month. Maybe because for my first trial I picked a monthly subscription, and now I picked annual? I'm not really sure, but it might be worth checking out to see if you can snipe another free month.
I would normally say no rush because there are no new games right now, and even the old ones have still vanished, but they may also close this "loophole" eventually, so it could be wise to act fast.