Just received the following press release...
Have you found all five Tamagotchi Connection secret codes?
To assist you in finding all of them, Bandai America is providing some tips to you. The first code was released in-pack: read the instructions on how to play games, shop and connect with your friends while searching for a secret code! The second code can be found online at Tamagotchi.com, the official Web site. There, you can create "More Friends, More Fun" by connecting with other Tamagotchi fans, download wallpapers and screensavers, and send e-cards! Look for the third code in Toy Wishes holiday magazine, which will lead you back to our Web site. Good hunting...it's hidden! The fourth code is on Neopets.com. And the very last code will soon disappear from a streaming video about Tamagotchi on TurboNick.com.
Good luck in finding all the secret codes! We’re also excited to announce a number of new design styles, including Butterflies, Surf, Camouflage, and Graffiti.
Your Friends at Bandai America