Despite Tails appearing alongside Sonic in the title cards, he's not actually playable in them in Sonic the Hedgehog 2 8-Bit. This implies that the team tried to make Tails follow Sonic in game just as in the 16-bit version but couldn't due to hardware limitations, which could explain why the story in the 8-bit version was changed where Tails is captured by Eggman and Sonic has to rescue him

My favorite is the Under Ground Zone one