It was 356 million.
It was an X Multiplier shot that he hit during Prison multi-ball. We think he nailed the Super Jackpot right after the ball went through the inlane with the X lit. I'm sure the X shot was maxed out. 2x scoring was going as well. The machine made a loud sound and we look at the DMD to see the 356 million flash on the screen. SKB's score went from 1.4 billion to almost 1.8 billion with that one shot.
What's really interesting is the fact that that shot of 356 million would not have been possible if he were playing on the pro. He had drained his ball and quickly hit 3 walker bombs, which started multi-ball and saved the ball. It was after that that he hit the 356 million X shot.
Escape Terminus is really cool. You collect points by hitting all of the mode shots. I *think* that the value of each shot is dependent on how well you did during that mode. I.e, the more points you scored on Tunnel, the more points you will get when you collect Tunnel during Escape Terminus. This is similar to TABA on LOTR. There are a lot of points to be scored during Escape Terminus. Once you hit all the mode shots, you complete the mode (which SKB did during this epic game).