For the past two decades, Sega has had trouble making a Sonic game that measures up to his first few forays, but "Sonic the Hedgehog" in 2006 was a new nadir for the fading icon. In addition to long load times and game-breaking bugs, "Sonic the Hedgehog" had loose controls (a death sentence in a 3D platformer), an unreasonable difficulty curve and a plot that felt like incredibly creepy fan fiction. As a character, Sonic isn't dead, but this game very nearly killed him for good.