My brother and I were roommates back in the 1980's and he got a murder party game available on a diskette. Now, keep in mind, back in those days we're talking a 5-1/4 inch floppy
but yes, I remember the 8 inch platter thing and I learned programming on punch cards. Used to make wreaths out of those punch cards.
Anyway, my brother and I hosted a murder party. We printed out character descriptions, issued the invitations and assigned everyone a persona. The premise was we'd just attended the funeral of my fiance who was killed by someone in the room. We had snack food on the table and drinks in the kitchen. It was great fun!
I dropped a bloody note in the kitchen (okay, it was a painted crumbled up ball of paper with a little clue written on it) when everyone got up to refresh their drinks. No one figured out it was me! Sneaky wench, aren't I?
This was great fun and I think everyone here would enjoy doing something similar. Heh, I got to dress up in my fancy black dress and wear faux diamonds because I was the rich *****. And we had some good appetizers, chips, dip and all that stuff you are supposed to do (I think?) when you attend a house after the funeral. Unless you're in the midwestern U.S., then they serve what is called a "hotdish"
Murder parties are fun. Try one sometime!