I don't see '06 or Black Knight here.

@Talking Gina Sorry, but I hate those two, even though I thought Sonic 06 was pretty good as a kid. Try Sonic P-06. It's brilliant

Okay? You may hate them, but you're asking which games other people think are underrated, not just yourself.

And I have played a few levels in Project-06, but I still like the original.