It makes total sense for this game to have a multiplayer aspect to it. Albeit, limited to four people multiplayer, but multiplayer none the less. What fun would it be if you could only have one of the Busters active by a player at a time? Especially with the others possibly being run by an AI that could be poor. Don't need another Sheva incident, if you know what I mean.
The below video shows off all the fun madness of the multiplayer, as well as some of the new weapons and enemies for the Ghostbusters world. Oh, and it also shows ya a bit more of what to expect when this game that has come back and forth from the dead like the creatures from the game. Looks like it could be winner as long as they get the shaky multiplayer of most of the consoles down.
Check it out here.