In Ghostbusters: The Video Game for the DS, you are the Ghostbusters who must save the city from all manner of restless spirits. You have a mission list you follow, and each mission must be completed so you can gain money to buy better ghost hunting equipment. The ghostbusters headquarters is where all the research and development takes place, but you've got to drive around the city in Ghostbusters: The Video Game to get to the mission locations.
This is where things start to suck. The game times you to get to missions. Yeah, you have to drive the Ecto, which controls like a whale with wheels (even in a video game), to the mission setting in less than 2 minutes most of the time. Oh, and Ghostbusters: the Video Game also doesn't do a very good job of letting you know where the mission even is. Sure, there is a little red exclamation mark on the map, but it's usually so small and far away it's hard to tell if you are going in the right direction. Plus, the map in Ghostbusters: The Video Game is confusing and many of the roads either dead end or don't let you cross over the barriers, making it difficult to even get to a mission on time.
If you finally make it, you are left with vague mission objectives and glitchy controls. Half the time Ghostbusters: the Video Game didn't tell me what I was supposed to be doing, and even when I did it, nothing happened. I don't know how anyone can play a game with so many bugs. The point of each mission is really just to help people and catch ghosts, both of which aren't difficult. But the Ghostbusters get injured by flying objects and knocked down more than someone playing dodge ball that it makes ti hard to even hit a ghost. This isn't a challenge, it's just annoying.