Overall the plot of the movie is good, they edited sonic was great, cute quips and mockups were fine. The only problem with the movie was for the more avid Sonic fans. Sonics origin was not being raised by a Owl in Green Hill Zone with a bunch of Wild Echidna chasing him. Also the world of Mobius was in fact our earth during the 1980s-90s after the US and Soviet Union deployed Nuclear strikes, attacking an invading alien race. Almost wiping out human kind entirely with a very small human population left over.
It is hinted by the clip with Tails at the end that he already knew Sonic. If that's so how? According to the movie, he was raised by an Owl until he transported to earth... So keeping my fingers crossed, hopefully Sega and Paramount are implying that the Sonic in the movie was in fact one from a parallel universe and might even include other characters such as Shadow, Amy, Knuckles, etc. One last thing... Jim Carey did an awesome job portraying doctor Eggman but come on, they couldn't have made him bald and fat like the real Ivo Robotnik?