This is it right here, this is the #1 best Sonic game ever made.

It may be lacking in personality, character, and story. But it perfected everything else in every other aspect:
Levels are peak
Physics are peak
Level replayability in the form of challenges
Having past OSTs as unlockable content

It's all exactly what I wanted in a Sonic game and the fact that they never made a boost game after this as good as this is a shame.
(screw the final boss though, what even is that?)