Game 8 was a fascinating, bloody battle. As opposed to some of the other games, we were 22 moves into this game before either queen had even left its home square!
By move 23, Caruana, with the white pieces, had an advanced passed central d-pawn, and a viciously-well-posted knight on the 6th rank, leaving Carlsen extremely cramped and with very awkward play.
But just 5 moves later, most of the material was off the board, Carlsen had evened the position, and the result was another draw.
Most of the commentators felt that Caruana had once again held a winning position, and had been unable to convert.
Regardless, we're two thirds of the way through the 12 games of the matched, and it's been deadlocked the entire way.