My 13`th Bday!

Hey guys! My 13th birthday is on november 5th so im assuming the party will be the weekend before or after. I`m going to have it co-ed and it will just be a big party with lots of games! But i really need help to find a fun theme such as murder mystery or something fun like that :) Hahaha if you dont know any themes i also need some games. HELP!!! Please!! Thankssss :)
P.s. I`m in 8th grade.
-Brooke