matt
GB4 solid hours of puzzling fun, really helps to have a printer. It took us about 4 hours to play through the first mission with 4 people, and everyone had contributed to a breakthrough by the time we were done. We really really liked the elements being spread out between physical objects, text messages, and websites. My one note is that it helps a lot to have a printer to make copies of digital content, in case everyone doesn't have their own phone, or in case no one has anything bigger than a phone available to view content. It would be nice to have more of that content provided in the physical package, locked behind 'envelope 1, 2, 3, etc's until the player 'finds' them in the game. I'm real happy with how this turned out, and I'd love to see what the next installment looks like!