This game was legendary for Sonic fans when it came out. I dearly miss this era of Sonic. What, with the awesome Jazwares toys, cool games, and a sort of retrospective look on the series when it was merely 20 years old.

Classic Sonic isn't particularly the star of the show, as his stage design is only fairly good. But I think fairly good was what we needed after the travesty that was Sonic 4 Episode I. His levels may not be Sonic 2 or Sonic 3&K tier good, but they're solid enough.

Modern Sonic really steals the show. His creative reimagining of Classic and Adventure era stages, made to be blindingly fast with tons of cool obstacles and enemies really appealed to me as a kid and still appeal to me now.

The only issue I have with this game is that the quality seemingly falls off right in the final stage, Planet Wisp. Which was done way better in Sonic Colors, the game before this. Also, the game is just so short, with only 9 levels (18 if you split the Classic and Modern sides up). I 100%ed the game, it's many missions, and achievements in under 23 hours. Now imagine how much faster that'd have been if it was just a normal playthrough.