 At the successful end of each mission, the list of suspects was narrowed down automatically through the process of elimination by using numerous clues that would be discovered about The Mole's identity (e.g.One clue was that The Mole wore a specific kind of voice-changer that would be placed over one's teeth, people with braces can't wear the voice-changer, therefore all suspects that have braces are eliminated).The user interface included the Digital Operations Research Assistant (D.O.R.A), which guided players to manipulate various technological tools including a geographic locator and an audio analyzer.