Digimon World: Dawn/Dusk review at Gamespot.

"There's an old saying that goes, "second verse, same as the first." That just about sums up Digimon World: Dawn and Digimon World: Dusk, both for the Nintendo DS. Apart from a few trivial enhancements that make it easier to train your virtual monsters and challenge your friends to wireless duels, the two versions of this so-called new game really don't offer much above the previous Digimon World that was released the year before. Once again, diehard Digimon fans will probably be able to forgive the game's phoned-in nature, while those not totally enamored with the franchise will probably shake their head at this plodding, half-hearted take on the monster battle genre."

Full Source: Gamespot