Heart rate really does work. Strangely, the picture isn't even scary. Okay, it won't really haunt my nightmares, but now I really need to sleep, and I can't.
It's ironic how I used to keep playing these despite barely knowing what the hell is going on. All I knew was that I had to do something an it's the only thing I can do - move forward. I can't gaug the difficulty, though. Point-and-clicks tend to be hard for me. Doesn't mean they're not good, though.
This one is better. It shows and highlights the mistakes of humanity, and let me add that this game pretty much sums up our entire species. Nihilistic, yes, but true.