Has a ton of Satanic symbolism in it. The pyramid with the eye of Ra comes from Illuminati occult which is a very real and very brandished thing in media. There's a card that has the Thelemic unicursal hexagram (
http://forgenerations.net/wp-content/uploads/2011/05/yugicards.jpg). These things are no joke. People can say Harry Potter is "just a movie" until it inspires their kid to try to become a warlock or use magic, it's a gateway for demons that must be treated with discretion. Personally, I'd never go near the stuff. Funny how Christians tend to see these things as harlmess yet God says sorcery is just as much of a sin as murder or rape, if you saw a movie of murder or rape you would not think it was "just a movie", you would think it was ploy of Satan to try to corrupt our moral conviction. These things not only invite demons but also encourage our children to sin, it should be avoided in the same way you would never show a child a pornographic film. It seduces them into magical sin.
I'm not just off on some conspiracy tangent, I know these things because I was a Thelemite before God had saved me from it all, so I know a great deal about things most wouldn't even believe. Thelema is a more advanced and way more evil form of Freemasonry, it is way more involved with Satan and its magic is considerably more potent. The high-ranking "elites" of Satan's high-court are always Thelemites. As such even having these symbols around or seeing them on TV is magical in itself, not to mention the collective juice of having millions watching at the same time. It's a powerful form of hypnosis and should be avoided. You may think it's not effecting you until weeks or years later when something your subconscious picked up finally "activates". If your conscious mind cannot see these things, your conscious mind detects no danger and as such thinks "oh it's all in good fun". That's how Satan lures us in.
Yugioh was part of the reason I joined the occult.
I can tell you for certain that the makers of Yugioh and the show are very high ranked occultists into some very nasty stuff. The whole entire reason for the franchise is for sinister purposes. I know with certainty that they
rely on people's ignorance of the occult in things like this as a way to sneak their way in, but people tend to take the demonic and magic realm lightly because Christians tend to think they're invincible. We are not invincible, we are just as if not more prone to demonic influence than nonbelievers, because we are Satan's enemy. Sometimes God lets things happen, we're not entirely protected from suffering and demonic attack. I probably take it a lot more seriously than you simply because I have witnessed the powerful effects of magic both physically and mentally and how it can control people. Just ask God to show you why it's not good and doesn't honor Him.
As Christians we are called not to cause other people to stumble, and as such I avoid these things. I don't want my hobby that I think "isn't a big deal" to cause someone else to get into the occult and damn themselves because of me.
Stuff's as serious as cancer. :/