The first game I've ever felt the need to review.
(SPOILER FREE!)
While my initial intention was to simply play this for the porn and spooks (yandere best dere), I found myself surprised. Within the first five minutes, I realised this game was special. I don't know if it was the creator's intent, but I've never related to a game's protagonist quite as much as I did to John. The art was beautiful and blended with the music (though supplied royalty-free courtesy of Kevin MacLeod) to create a wonderfully surreal yet intimate experience.
The game certainly wouldn't be for everyone; there wasn't nearly as much erotic content as I'd expected, in fact, I believe there's only two scenes and you can very easily miss one of them.
I was fortunate enough to get the 'good' ending on my first playthrough, and I feel confident that, after save-scumming to see the other endings, I found the only fulfilling conclusion. Assuming, of course, you become as attached to John and Lizzie as I did.
If you have a couple of hours to kill, don't mind dark themes and emotional rollercoasters then I can't recommend Crimson Gray enough. Even if it doesn't arouse you, it leaves you emotionally invested enough to see it through to the (potentially bitter-sweet) end.