Clue: Murder at Boddy Mansion uses 3D graphics with uncanny looking character models. Anytime the player or AI makes a suggestion of who killed Boddy with what weapon, the game pulls up a little animation that depicts his death from the murdered man's point of view, complete with a Scare Chord. The cold, dead stare that the characters have as they peer at him just makes the whole thing worse. Despite all that, this game was rated E for Everyone. Thankfully, there's an option to disable these.
You want a reason to fear Mrs. White? Play the Genesis version of Clue and suggest/interrogate/accuse her with the knife. Good luck sleeping after that.
In book #13, chapter 5 ("For Goodness' Snakes!"), the chapter ends with Mr. Green being strangled by Mr. Boddy's pet snake. Green begs for help, but Boddy just pulls up a chair and watches. Pretty dark for a kids' book based on a board game. (To be fair, the solution shows that Green lived, and Bobo just "managed to squeeze some sense into" him.)
The fourth and fifth murders. First, Yvette walks into a dark room. An unknown voice tells them to lock the door and asks them if anyone saw them. Yvette answers in a different accent, only to switch back to scream "It's you!" as they get strangled with the rope. Then we cut to the cop telling someone on the phone that they are genuinely afraid, only for the murderer to use the lead pipe to hang up the phone, then bash their head in.
The third murder is pretty creepy too, in a way that's similar to the fifth. The Motorist is on the phone, telling an unknown party how they've been locked into the lounge and how there are people there having "some sort of party". They've just said that one of the guests is their old boss, revealing his connection to Colonel Mustard, when an unknown party sneaks up on them, bashes them on the head with the wrench, and nonchalantly hangs up the phone.
While the sixth murder is mostly seen as funny, it can still be rather jarring due to how sudden it is.
The scene leading up to Mr. Boddy's death. As the guests unbox their "gifts" and pull out the iconic weapons, viewers know one of them is going to be used very soon. The rising Scare Chord and the cold tone Boddy takes as he makes his rounds through the room, looking at each guest, both escalate the tension until the moment the lights go off, and the inevitable happens.
Boddy: In your hands, you each have a lethal weapon. If you denounce me to the police, you will also be exposed and humiliated. I'll see to that in court. But.... if one of you kills Wadsworth now, no one but the seven of us will ever know. He has the key to the front door, which he said would only be opened over his dead body. I suggest we take him up on that offer. The only way to avoid finding yourselves on the front pages is for one of you to kill Wadsworth.....now!
There is a good reason why Ending D was cut: It has Wadsworth going through a Sanity Slippage as he admits that he has poisoned the guests just so he can commit the perfect murder. The novelization kicks it up a notch as it's revealed everyone (including Mr. Green!) killed someone and then after the slow-acting poison (disguised as brandy) kicks in, the guests drop dead! Wadsworth escapes by car...only to find the guard dogs in the back seat and they jump him with it being unclear if the dogs or the car crash killed Wadsworth...