Before I start this review, please don't read the description, infact, don't even read this review, there aren't any spoilers, but reading these spoils just that much more of Code Geass. Don't understand the premise, don't even look at the pictures (I guess that can't be helped) don't understand anything, just jump straight into it, you won't be dissapointed.
Code Geass is a masterpiece in the true sense of the word- and I don't even throw the word around. I would rate it much higher than 93 (I have only Fate/Zero rated at >93) if it weren't for some very tiny and maybe even insignificant problems, but while writing a review, I can't overlook anything. But we will get to that in a bit.
If you are still sticking around, then let's get down to it.

Artwork and Animation (18/20)

The Artwork of Code Geass (CG from now on out) is aged and withering, that is not to say its bad -its not- it just isn't in tune with what we watch over here in 2014 (CG was released in 2006, almost 8 years back). The artwork is much more realistic, mature and hardy, which gives its own special flavor to the series. I think the original "shock" of a new artwork really only lasts the first 5~ minutes, after that, it doesn't really matter since you will be too sucked in to give a crap.

The character models are also great. At first you would probably think that the legs are too long (not Special A long), but they aren't, they are in tune with reality. The faces are also very well done, especially C.C (pronounced C2) and Leouch's.

Of course, how can I forget mechas? Well, mechas back in the day didn't look and move the way they do now, but they are still very good, I'm not a mecha fan, so i won't comment on this further, you decide.

The general animation and artwork is also top-of-the-world quality, and I don't say it lightly. The blood and particle effects (if can call it that) are quite something. The uncensored scenes really get your blood flowing.

The environment is also quite beautiful,it isn't eye-gaping good, but it will make you look twice.
The art section also shines in the way of fanservice, there is fanservice at opportune moments, but it isn't overdone, and is kept low (think 4-5 scenes over 25 episodes), which means while you won't be looking at breasts all day long, you also won't be running along to type "omg code geass hentai" on Google Images.

Oh course, there is the occasional Pizza Hut sign, which is annoying advertisement, but atleast it isn't overdone, and I can understand budget constrains. I'm fine with ads as long as they don't go out of their way to get in my face.

Music and Sound(18/20)
The voice acting is a success. Voices are more than enough convincing and confident. The environment sounds were also very good and contributed greatly to the scenes. That said, all is not well in the music department. The OP01 (colors - by Flow) is just goddamned magic from the skies, it is by far the best OP I ever heard. The second time I heard it, I just watched it over and over six times and even then I wasn't finished. See, that's why I said I wish I could rate higher. Seeing how great the section has been so far, I would have called it "brilliant", but the problem with writing objective reviews is this - All the OPs and EDs are equal, one good OP doesn't negate a shit OP. That said, OP02 was meh at best and OP03 (which showed up like, twice) was utter crap. The EDs were all to the tune of "meh" , well compared to Colors anyways they were.

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Story (19/20)
The story in Code Geass is downright brilliant. As much as I like to say that a story can't be perfect, I guess I'm just going to have to concede this one. CG starts off very strong and keeps making an even stronger story, with some respite at ep06 (which was just some sort of comedy ep) and then never ever let's up. There are no flashback episodes and there are no fillers, CG just marches over anything and everything with its solid plotline. Sure there are some things which are never explained, but they can be explained most of the time with simple deductive reasoning. Why would you EVER want a series to explain EVERYTHING to you? Which I guess is another good thing about CG - It forces you to use your brain. The story isn't a hand me down, and you have to hold your concentration to engage in CG. It isn't as ridiculously hard to grasp as KSnH, and it is also much more rewarding if you grasp it.
The division of focus in CG allows for a greater variety of support and CG never once favours one side over the other, despite Lelouch's skill, he isn't a god, and has to retreat quite often.
One thing I found weird about CG is that even though it revolves around the power of Geass, the Geass is almost always used subtextually. Sure, there are times when it is used on screen, but most of the time, you just have to chalk it down to lelouch using it in the background.

Characters (19/20)

The characters in CG are....amusing.
I found that there is absolutely no character in the entire series that didn't get a great amount of development (other than the very very far off supporting crew that appear as often as villager A). Let that sink in for a while. Every single character has a backstory, every single character changes, and every single one of them goes nuts. Which is the correct thing to do when your country gets blown to shit.
I found some of the characters annoying to the point I hoped a KnighMare crashed into them and they just die already.
Now, that isn't necessarily a bad thing, because the point is - the characters managed to squeeze a response from me, a bad response admittedly, but a response nevertheless. Which means I -at some point- connect with the character that will be negatively effected by the actions of the annoying character in question. How is that a bad thing?
Also, the amount of Yuri around a certain someone is so much that the entire series turns into /u/ while she is on the screen.

Enjoyment (19/20)
Code Geass is by far quite enjoyable. It never has a boring moment, it never feels drawn out and it just continues to surprise you at every turn of the way. Oh, and no cliffhangers in any episode, you know, except the last ep, which would have been annoying when the second season was yet to air, but over here in 2014 it just gives you that NEED to get the fuck off your couch and get the second season rolling already.

So yeah, total is 93/100, which makes it the second best thing I ever watched.
In case it isn't evident already, go watch it unless you hate anything exciting and fun.