there is a code to get tamagotchi twins: When your tama is flying away, hold down buttons A B and C at once.after the beep, let go of B and C. While holding down a button A, press reset button. you should have 2 eggs on your screen.
It might work, it might not. I got the code off the internet.
not on the same screen, but if your tamas are just starting and you pull the tags at the same time then they should eat, poop, and need dicipline at the same time.
This rumor went so far as people lying I asked Bandi personaly they said 'When we created tamagotchi we DID NOT enter a cheat for twins triplets etc.' If you have seen a picture it is a FAKE REMADE screen image
IT WAS A LIE TO MAKE PEOPLE RESET AND START ALL OVER AGAIN FOR THEM TO HAVE A HIGHER GENERATION!!