Sonic & Knuckles is the worst classic Sonic game. By far. None of the zones feature water, making the bubble shield feel like vestigial design. The locales trend more generic than previous entries, a place where the more realistic take on level art makes settings feel less interesting. Disliking the music from any of the classic Sonic games is such a foreign opinion to me that I can't even parody this one The bosses are lethargic, most of them waiting games. Lava Reef with the rock platforms in the lava must be the worst classic Sonic boss. Far too many, far too momentum-ending gimmicks. The pulley machines in Mushroom Hill, the monkey bars and giant screw platforms in Flying Battery, pushing blocks and door openers in Sandopolis... I really could go on. The level design is significantly more cramped and filled with hallways than Sonic 3's, resulting in the most start-and-stop gameplay in the series since Sonic 1. The only zones not guilty of this are Mushroom Hill and Sky Sanctuary, but their exceptions don't excuse the rest of the game. The Doomsday is horrible. It's just not worth the effort to get to it. Thankfully Sonic 3 can be played by itself. Spoiler I kid, I kid. Sonic 2 is the worst classic Sonic game. Spoiler Not kidding about the rest of the post.