A physical case file shipped to your address. Inside you'll find crime scene photographs, witness statements, forensic reports and other evidence documents from the case. Once you purchase, you also get immediate access to the X Archives' online system — that's where you'll submit your answers and unlock new objectives as you work through the case.

No. Each case file is a one-time purchase. Buy it, solve it, done.

Anywhere from one to five. Some people prefer to work through it alone, others make a night of it with friends. Either works.