I woke up this morning with a couple of messages to modify my first post (done) as they got notices from Stern.
I went through this on the Kiss game doing Kiss Shooters and at the time was a little naive of me to do so, so I stopped.
I can understand making something with a ghostbusters logo, ecto 1 license plate, ecto 1 car and even looked up and the firestation and proper library from the movie is protected as is slimer and marshmellow man.
Can Stern please post a copy of what would be a infringement on their license / agreement so us creative people can have some fun. In the end we don't make alot out of it and more for the fun and gives us some hobby money towards buying another pinball (Stern) so you are slightly affecting your own sales.
As for making stuff for a Ghostbusters pinball as I see it as long as it isn't a item that is a infringement of the above I think we can still design and make stuff for the game as long as it isn't containing and creating a item protected by an IP. I also don't see a issue with getting a after market ecto 1 and adding lights as you are then paying for the cost of the publically available car and then paying for the lights and labour to install. Maybe I am wrong - please correct me if I am but to say you are not allowed to make anything for the ghostbusters pinball is crap. This is then a monolopy for Stern and then sorry to say Mezelmods.
For me I am going to make my version of a covered pole and top for the slimer, pke flippers, a base for the publically available slimer for a topper and a few other things.