There are 3 different versions of the intro sequence for the game.

In the Japanese PlayStation version the intro is done in black and white with uncensored violence, in the French/German PlayStation Director's Cut, along with certain PC versions, it's the same as the Japanese version but in colour.
In the French/German PlayStation Director's Cut, Japanese version and some PC versions, Chris Redfield is smoking a cigarette during the cast section, but it was censored in the other versions.

Along with this, the Japanese version on PlayStation and certain PC versions, Chris Redfield's bad ending shows him smoking a cigarette in the helicopter, but it was censored in the other versions.

A newspaper, which shows a dead body is censored from the Japanese version. The Japanese Sega Saturn version however is left uncensored.