Zachtronics on Twitter: "FYI: You're really not supposed to open the envelope that comes with your limited edition SHENZHEN I/O manual until the game tells you to." / Twitter
SHENZHEN IO Manual - PDF Archive
Beginner's Guide for SHENZHEN I/O - YouTube
Shenzhen IO Manual - Lecture notes 1-3 - For the best SHENZHEN I/O experience, we highly recommend - Studocu
SHENZHEN I/O - new game from Zachtronics | Page 3 | NeoGAF