This game despite being a clone of Mario Party is not half bad even though the "critics" say otherwise.
This game might be based on Mario Party, but it uses a different system whilst Mario Party is purely based on luck. Sonic Shuffle uses cards, at first they are hidden, but when they become visible it makes this luck based game more strategy based.
And the other good thing this game does is the music. Sonic Shuffle has a better ost than Mario Party.
In the other hand it has the same lackluster as the very first Mario Party, only 4 characters playable: Sonic, Tails, Knuckles and Amy Rose. It has also a very few stages, sadly.
I'm indifferent ragarding the graphics, I have seen better, but it's not ugly either.
Honestly, it's really far from being that bad.