For the time made till this time this game can and must be considered as one of the best action-adventure games!
Graphics, for it's time they were amasing, for now they are considered old, but still the animation, textures, lights, etc. are to a decent level for today's facts.
Sound, pretty amazing to all levels, from radio, voice-acting, environmental sound, gun-fires, etc.
Gameplay, pretty much like gta, that means simple and 99% non-problematic! The difference from gta though, is that is realistic. The way the car goes, your guns, your character.
Story, Probably a story that can match Godfather the movie. It's what it makes this game to me a masterpiece! At some point you will feel your heart beat as if you are truly living this! I won't say a thing about the story, don't want to spoil it to anyone that hasn't play the game, but pretty much the start is that you start as a taxi driver, doing your work. You're just the right taxi driver in the right place at the right time for 2 mafia guys to enter your taxi and order you to take em away from their predators. You won't know what's coming, and every mission feels like sth new and always something happens that you can't easily predict.
I wish they still made games like that.