Gameology: Commentary and Resources for the Game Studies Community

It sounds like you've handled everything perfectly and they should stop at this point, or point to a specific article/section that they claim is false and then the issue can be handled from there.

However, it might be good to have legal support on this and as a grad student at UF, you do get free legal help through student legal services. They normally handle small stuff (helping students get their money back from crooked landlords), but they know general legal workings like what letters to send when and how to handle things (when to use certified mail, verbiage) and that can be really helpful. Plus, since the initial letter does seem to be an intimidation tactic (otherwise, why not mention specifics and get the real process moving if there was a real issue), then showing legal representation can make them back down (or it could make things escalate).

I don't know enough about the games or the game makers to have any specific advise, but the legal aid folks are really nice and really helpful. They helped me get an apartment deposit back when the landlord tried to steal it (pictures of a different apartment and all--freaky!). They're only there for students, though, so you'll have to do it before you graduate.