I deeply appoligize but after looking over this item to find the operating system i realize it is not a computer game but just a regular game that includes. 3 crime Stories, 9 disclosure cards, CSI handbook that includes: Crime scene photos, crime scene descriptions, crime Solutions, Rules and Glossaries, 1 arrest warrent pad and 1 custom CSi 12 sided die. My husband purchased it for me a while ago and said it was a computer game, i never really looked at it just found it sitting on the shelf so i put it in to sell box. Again i appoligize.