I wanted to watch Nirvana as I heard it was made by the same people doing Mediterraneo, which I enjoyed. I watched it in Italian, so bad dubbing was not a real problem for me (even if Christopher Lambert is clearly not speaking Italian). A lot of reviewers compared this to films like Johnny Mnemonic and The Matrix, but that is just inviting disappointment. The best American film match that I know of is Existenz. The same ideas of games becoming too real, intermingling with reality, to the player's downfall.
The film has several things going for it. One is Christophe Lambert, who is always funny in any movie, no matter how bad it is. Another is the very beautiful Stefania Rocca, playing the mysterious Naima. The best thing, in my opinion, is that it is a truly Italian film, rather than a clone after an American movie, a feeling that is enforced by Diego Abatantuono playing the role of Solo in a typical Italian way. Other things, like the scene with the guy killing someone in the corridor because they were making too much noise 'ma che cazzo?!' or the car antitheft device spouting Italian insults are good examples.
The cyberpunk theme is clearly influenced by William Gibson's vision (I mean, what cyberpunk film isn't?), and in a way steals a lot of the elements you see in Johnny Mnemonic, released just two years earlier, but the moral of the story is more metaphysical in nature.
As much as I liked all of these elements in the film, I have to also complain about a lot of others. The low budget feel, the technicolor "virtual world", some of the clicheatic characters, etc. Overall I liked it, though, and I think for its budget, country of origin and ambitions, it was not a failure.