Pain: Amusement Park's biggest problem is that it's not a very good value. You get one level, plus the Painlab, and that's about it. The amusement park's design isn't particularly good and doesn't have the depth of the downtown level from the original release. To top it all off, additional characters are still available only for a fee, which is almost criminal considering how much you're already paying for such limited content. If you already own Pain and are craving more, this expansion may be worth a look, but its appeal is extremely limited.