It more or less feels as if someone modded breath of the wild and put Sonic in it, uh
You got this open world bit where you can run around, you can go pretty fast but maintain perfect control of him, sometimes there be enemies to fight, and Sonic can like punch and kick them, like, when was the last time he ever did that, Sonic Battle?
They also, like, basically figured how to cram classic Sonic styled levels in the game: by making them the shrine challenges of botw, lol
You find a sort of shrine you have to power up with something, inside there's a short level to beat and whatnot
Like, very short, as some ask you to beat them under a minute, tho would say they seems to be better done than Forces' mindless levels, lol
One stupid thing, that I dunno if maybe is only for this tutorial area or what, there are invisible barriers blocking you from running up mountains or other structures, bullshit
Hope that restriction is removed in proper gameplay, or that'd be quite disappointing, as in botw you can just climb anywhere if you got the stamina for it