Berserk 1997. Berserk is my favorite thing of all time, but it is deff not for the faint hearted.
Highly recommend the manga too. Its a bit different, but same atmosphere and general story. It has more context as 1997 was only designed for one season, so it cut out a lot of things that would have become important later on.
Just today, I was using windows on my laptop, playing a game made for windows, Black Ops. And it crashes every time I boot up the Call of the Dead. On linux, while it does stutter on that map depending on where i am, I can still play it surprisingly. Its very strange.
According to PEGI, Sonic 2 should be rated 18+ because of simulated gambling.