A quite fun and enjoyable addition to the Ghostbusters franchise.
You're playing as "Rookie", starting with the original ghostbusters team and fighting against lots of ghosts and all sorts of paranormal entities.
The story is set after the movies, with the team investigating paranormal activities throughout the city, while facing again the threat of the great destructor and the entity who wants to summon him and merge the ghost world with the real one.
To be honest, i didn't found the story to be a very strong part of the game, but it's not bad either.
It does set a nice foundation, to bring back the ghostbusters and some of the ghosts you already know from the movies (like slimer, the stay pufft marshmallow man, the library lady...) and the overall atmosphere and humour is pretty close to the movies.
The graphics aren't top notch, but there are games which aged worse and they did a nice job with the characters, they are all very recognizable.
Gameplaywise it's pretty much a third-person "shooter", but instead of guns, you are using your proton gun. You have to shoot the ghosts long enough until their "health" is down, then you need to catch them with your ghost trap, while trying to keep them in the beam so that they won't escape.
Capturing ghosts was the most fun part for me actually, as it was implemented pretty good. The controls of the proton gun while catching a ghost with it, felt pretty good, especially when struggeling to get them into the traps.
The only issue i had was with the camera, it was a bit clumsy to control (with mouse and keyboard) but after a while i got used to it.
All in all it's a nice and fun game, which does a good job in creating a nice ghostbusters atmosphere.
Despite some (minor, imho) technical flaws, like the controls and the somewhat outdated graphics, i would highly recommend it to anyone who likes the movies.