Argh, this is a tough one for me: I do really like how charming this game looks and feels, but damn did I just find it frustrating.
There was a lot to like in the game: the levels were very cool and intricate with not only secret stars but also multiple routes and little hidden caches of candies, and there was a lot of challenging obstacles to get through with skillful use of the slides and jumps. And of course, the art and presentation of the game was very charming and bouncy.
But as hard as I tried to enjoy it, I just couldn't get into it as levels would quickly devolve into me constantly ramming into obstacles I couldn't see coming in time, slipping down unclimbable slopes and having to restart to try again, getting frustrated at never being able to stand still on tiny platforms since everything is slippery, and so on and so forth. I wanted to elegantly slide and maneuver through the cool levels and feel the rush of speed and smoothness, like you can in other fast-paced platformers like Fancy Pants, but it was impossible to do it here without having to annoyingly go through so much trial and error.
I mean, c'mon, it's been decades since Sonic came out and we still haven't learned that having a character move so fast and a camera being so close is just a recipe for disaster since you can't see obstacles ahead? And then you add to that already disastrous mix with an entire game themed around the most annoying level in every platformer: ice levels. Well, then again, everyone else seems to love Sonic so maybe I'm just an old impatient fuddy-duddy, haha.
Again, it definitely has a lot of potential and it was cool to see the game constantly getting updated and such, but at its core, it just felt like a very outdated platformer.