Complex sentence: Welcome to Pia Carrot 2.2 is a branch of "Pia Carrot 2" that is set 4 months after "Pia Carrot 2", released for Game Boy Color by NEC Interchannel in 2000.
Split into simpler sentences: Welcome to Pia Carrot 2.2 is a branch of "Pia Carrot 2" and is set 4 months after that game. It was released for the Game Boy Color by NEC Interchannel in 2000.