I'm really mixed on this question: Is this game good?
Yes and nah.
-The Chao Garden was undoubtedly one of the best things in this game
-It had an interesting story.
-It had excellent bosses.
-Glitches, like in Shadow the hedgehog and most of the games released at the time.
-Graphics are awful, period.
I would honestly recommend you to watch Sonic X instead of bothering playing this.