IGN writes: "Sonic & Knuckles is a solid entry in the series, and it's cool to see the "lock on" technology of 1994 included here. I'd still like to see SEGA put more effort into the visual presentation of the Vintage Collection. The "graphics smoothing" option always makes the games look worse and the dull blue background could use a lot more personality. But for $5 you get a fun Sonic game, and new content for any previous Sonic titles you've downloaded. This is a good value for Hedgehog fans, and a helluva lot more fun than most recent games in the series".