The film was basically...
... (and an overall unimpressive, average film no more than 5/10 from me IF even that!) a 2000 amalgamation of "The Blue Lagoon" (1980), "Lord of the Flies" (1990), "Jaws" (1975), "Apocalypse Now" (1979) and Castaway (1986) (though you may indeed also find similarities, if that one isn't an official remake of that one, with the 2000 film "Castaway" as well starring Tom Hanks) with a little bit of Danny Boyle's own style from his other 90s works and even the DiCaprio flick "Titanic" (1997)-influence can be felt in small segments here, around it.
And did most of us feel that this movie really did, and quite heavily at times too, borrow ideas and influences from those movies and also, in this case, didn't exactly stand on its own legs and didn't really bring any real freshness to the material and lacked originality, for the most part at least anyways? I sort of felt this way.
It was basically like a mixture of all those films and a few others and their related styles for the MTV generation of the new millennium.
And it wasn't totally bad but was overall rather average and is possible that it could be Danny Boyle's weakest work or one of his weakest for sure.