Modern-Gamer writes: Mixing game genres is a constant in video games. We always want to see our favorite characters in a new setting but to bring an entire series to a setting is something else. That's the idea in Final Fantasy Dissidia, the upcoming fighter from Square Enix that features the entire Final Fantasy universe. So with the game still only a month away from a US release, Square Enix has released a somewhat early demo via PSN. This leads us to two very big questions; is this demo enough to give an idea of the final game? Is it worth downloading the demo or are you better off waiting for the full game?