Classic PC horror games 7th Guest and 11th Hour released on Steam a few days ago. I very fondly remember playing these games way back in the day when CD roms where just starting to be a thing in PC gaming; yes folks, I really am that old. These were some of the first games I can remember that used the FMV of the time. These hardcore puzzle games are filled with many mysteries and a wonderfully creepy atmosphere perfect for your Halloween pleasure.
http://www.youtube.com/watch?v=nUvqkdtXMPY
http://www.youtube.com/watch?v=bdDrQQPApYs