Only on the Japanese Playstation Network though and for a price. The demo is called Dissidia Duodecim Prologus Final Fantasy. For ¥300, you'll be able to play Story Mode or Arcade mode. The story mode is a short scenario that ties to the main story. Arcade mode is just a regular battle against the CPU. Keeping the save data on the PSP will unlock Aeris as an assist character in the final game!