This is the first game to truly solve the problem of "criminal investigation" as a game mechanic. There's no detective vision, and the character doesn't automatically spout off conclusions when you scan enough clues. When you find a fingerprint on the murder weapon, it's just that; a fingerprint. It's up to you to figure out how to connect that to a suspect. You have to actually think about what you're doing, there's no handholding. You can peruse security cameras footage, canvas for witnesses, follow leads that will dead end sometimes, stake out a person's home or job, track down the sales records for a murder weapon, identify a suspect by their footprints... The array of tools at your disposal is incredible. And the murder board is just the best thing ever; you even get to scribble your own notes and make connections with different colours of string, and it's not some game mechanic, it's literally just a tool for you to assemble the evidence like a real detective would, so that you can figure out your next move.