Uh, guys, Sonic CAN get a lift from tails, IN single player. While standing still, just hold up and press jump, then press it again and that’ll make Tails start to fly. Jump into him and once you latch on you can control Tails just like you would normally.
Btw, Blue Sphere bonus stage completion goes towards unlocking extras like sound test and some other minigame stuff
Spoiler for what unlocks
[details=Spoiler]right now I have sound test, puyo puyo as a separate game mode, and apparently once you finish all of them you unlock Blue Sphere as a game mode lol. I don’t know what happens if you get all gold medals though,
still working on that, but I’m halfway there [/details]