It wouldn't matter if it were 2010, this game is still better than most out there.
Graphics- Now in today's world the graphics are spectacular and look as real as ever. This game, for the time it was released, had excellent graphics. Everything is clear and easy to see. The characters themselves look pretty good. The only bad thing would have to be the occasional blocky looks of certain things.
Sounds- The music in this game offers some enjoyable tones. The music you hear always seems to perfectly fit the theme of the environment that you are in. The actually sounds themselves are all great. Nothing that can be complained over in this category.
Gameplay- This aspect is what makes any game or great or terrible. For this game, I give it a 10/10. The controls are easy to pick up and learn. If you don't know any of the moves or controls, you can always just go to the ghost in the starting area to learn about them. When actually playing the game, you get a feeling of fun and that's what counts most in a game. You also get a great sense of satisfaction for completing puzzles and such. It's very fun to play.
Multiplayer- Yes, this game has multiplayer. It is a decent multiplayer game, but obviously, the main focus of the game was on the main, single-player mission. It will still serve up a few fun times with friends though.
Replay- This game is a long game, and has many optional items to get. Trying to get all of the items will be a challenge, although most of the game isn't that hard. You'll also get to replay any boss, cinema, or mini-game that you've under-covered so far in the game, whenever you would like. You can even try to get a high score on the mini-games. This game will keep you occupied for a while.
Overall- This game is one of the best, if not the best, game for the N64, it offers hours of entertainment and never gets old. Still probably worth $50 even today.