Pirates of Caribbean: At World's End marks a good spot in film-based games, especially on the DS.
Graphics: They're quite actually, considering the genre of games (movie- based don't usually get good graphics). They are full 3D, though a little bit choppy sometimes, especially in scenes of action (which is normal, due to the DS's hardware limitations).
Sound: A bit monotonous, using the same theme for the whole level you are playing. It's subtle, yes, but it could be a little more versatile here. Voice acting is quite nice, though still continue to be in English for who plays in different languages.
Gameplay: Nice. Platformer, action-pirate based game, it's all here - in different dosages. The levels are big, but not boring, and the touch screen isn't used much (common to these games). However, it makes use of the latter in the boss battles, which simply involve sliding the stylus to harm and then a combo to disarm your enemy. Simple, but fun. Opening chests also involves the touch screen, as well as equipping some items.
Replay value: Not much. Local multiplayer is just what it includes. We didn't expect Wi-Fi though, but it would be a good addition. The Mini-games help a little, but after completing the main story, there's not much to do.
Resuming, POTC: At World's End presents itself as being a good movie-based game, especially on a handheld! It contains enough for keeping you entertained for some hours, and certainly fans of the movie shall like this. It also appeals for non-fans, like me, in which the game is surprisingly good. However, it doesn't include much replay value, and it may get boring after a while. Get it if you like!