This game bothers me because it could've been something really unique and interesting. Unfortunately a troubled development history, rushed release, and a shitty deal with Nintendo forced what was known as Sonic Synergy to be forced onto the Wii U, a console far too underpowered to handle what they planned for the game, resulting in the product being morphed into something quite different and quite worse.

While far from what I see about it being thrown around as one of the worst games of all time, it's really quite mediocre as a title, with very simple combat, exploration, and platforming, a general level of bugginess, and only a somewhat decent score.

What could've been a brand new avenue for Sonic and something genuinely advantageous for the franchise, opening up a secondary spinoff franchise with its own unique concepts and ideas developed largely by an outside studio, was essentially killed off due to the failure of it's big title. Truly sad. I hope one day we can see Sonic Synergy resurface one way or another.