The original audio for the program is indeed 2-channel, but for whatever reason, PBS has been upconverting it to 5.1 for the US releases. I can almost guarantee it's a simple matrix upconversion rather than a full-on 5.1 mix. In which case, I'd much rather have the original 2.0.
Just a reminder that the Walking Dead Episode 1 is now available for free for the next week. The others will be on sale on Friday.
Get and play through the first one now (takes 2-3 hours) to decide if you want to get the others when they're on sale.
Crave published the previous Pinball Hall of Fame collections that Farsight developed, but those are a separate product from the Pinball Arcade. From what I can tell, Crave has nothing to do with the Pinball Arcade. It looks like Farsight is publishing these themselves.