Graphics -- 8
Wow! The translucency effect looks really cool. Buildings slowly fade in from the distance, and pop-up is virtually eliminated. The two-player game is pretty bad though. The translucency effect goes haywire, and ramps and other objects still remain partially translucent when you're only a few yards in front of them. Still, the resolution is also high and the colors are bright. There is no slowdown, just a little draw-in, but it rarely affects gameplay.
Sound and Music -- 7.5
Most of the sounds in the game are direct cuts from old Sonic games. I didn't really have a problem with this; I liked the old Sonic sounds.
The music, which also received poor reviews with many game magazines, comes in two flavors: vocal and instrumental. The vocal tracks, in my opinion, sound great. Granted they do sound pretty fruity, but I like fruity music!! It's mostly dance/techno stuff, kind of like La Bouche, perkier than Everything But The Girl, but in any case it can stand on its own. And for those who didn't like the vocals, there are instrumental versions of the songs (which also play in the replays), that equal, if not beat, the quality of their vocal counterparts.
Gameplay -- 6.5
The first problem you'll have is controlling your characters. The analog controller helps a lot, giving you the ability to control your character's movements much more accurately. Still, the game takes a while to master. I guess it makes more sense when you realize that you're controlling actual characters, and not characters in karts (except for Amy). Looking at it like that, you can appreciate the characteristics that each character has.
Each character also possesses a special skill. Sonic can double jump, Tails can fly, and Knuckles can float. You can also spin dash (which I never found useful). Holding up speeds you up, and the L and R buttons function as shoulder brakes (like in WipeOut).
Then you've got your basic power-ups: rings (in 5, 10, and 20 count varieties), shields (bubble and lightning), and super shoes.
You start out with four levels (the standard Green Hill clone, a city track, a ruins sort of track, and a factory track), and the fifth takes place in an emerald. The levels are laid out more like a Sonic platform game than a Sonic racer. There's a definite path to follow, but in order to get secrets or to cut your time, you'll need to make your own shortcuts. I thought this was pretty cool, because it means that the fastest character isn't necessarily the winner of the race. Within each course, there are Sonic coins, which you'll need to collect (then place in the top three) in order to get the secret characters. The accelorator shoots you ahead a lightning speeds at the expense of a few of your rings.
In two-player mode, you and a friend can either race for the best time or to see who can get five balloons first. The balloon race is very flawed though. For some reason, the balloons are always in the same place, so it becomes moreso a game of memorization than of skill and luck.
There's also a tag mode (one-player only), where you have to tag the other four racers in the least amount of time. Sounds good, but for some reason, whenever you pass a character, they turn around in the opposte direction, and in that second that they evaded you, you'll see them practically half a mile down the track.
These things sound like a lot of fun, but that fun wore thin very quickly. First off, there wasn't really enough Sonic-esque things to do. What happened to the smashers from the Scrap Brain Zone (Sonic 1)? The corkscrews and teleporters of Sonic 2? The game really lacked that Sonic feel to me. The game just feels like the Sonic name was slapped on it. This could've been almost any other game, given a few changes.
Replay -- 6
The one-player mode got old pretty quickly, and it wasn't until I started getting the secret characters that I really found interest in the game again. Even after that, playing the same courses really got tired fast.
The two-player modes would've been better if they had just be more balanced. Since the visibility is limited, it really becomes a race of who knows the track better. I would've liked a teleporter power-up, like in Sonic 2, switching player positions, and making the game more interesting. In fact, the whole two-player game in Sonic 2 was better; and more balanced. Winning didn't mean getting to the goal first, you got points for the most items opened, rings (amount you had when you crossed the goal), total rings collected, and overall score. That's the kind of balance I expected, or at least something better than what it has. (Random balloon locations could've been a start.)
Overall -- 7
A good game, but not great. I wasn't expecting this to be our 32-bit Sonic savior, just something more than it was. If you have to have every Sonic game, then buy it, otherwise just rent it.