Question Basic Question

Hello...just a simple question...hope it's not too simple I have an old laptop i installed Debian on..with the plan of installing an old mud I had waaaay back when. I am not opening the mud to outside players etc(with one exception...just to show a friend the zones etc..)...just goofing around finishing some areas I had started...messing with snippets etc... my question...being a Linux neonate(that is below newb) where in the system do I install the mud? Do I make a /mud directory and install there...or should it be in the /home or /usr? Sorry if this is too basic of a question here, but I looked all over and have not found the answer.
Any help appreciated.
Respectfully
Crueltiming