Well I actually did watch it, all twenty-seven episodes and the movie that ended the series, and it really wasn't that good at all. I could easily see why it borabed in Japan. The artwork wasn't the best, and it didn't help that Kaiba had green hair when he has brown hair in the manga, they gave a one-slot manga character, who wasn't even that good, a main character role, which made her annoying in the series and it was only loosely based on the first seven volumes of the manga. There really isn't that much blood or anything that graphic in it. Perhaps a bit more violence than what the Duel Monster anime had from what I saw in some online summaries of the subbed version, but not that much.
I remeraber enjoying some of the earlier episodes since it was something different with Yu-Gi-Oh!. But by the time they were ten or eleven episodes into the series, it followed the same forumla: Yami Yugi fights the villain of the week in some random game and then puinshes them. I honestly wasn't impressed with the plot. What I read of the first two or three volumes of Yu-Gi-Oh! were much more interesting and better than what I saw in the first series. Though I have to admit, the movie was a good way to end the series, but it probably helped that it was mainly about Yugi and Jonouchi and that the duel was fairly interesting. Basically, I think that the manga is be more enjoyable than the first series and I would also suggest actually watching a series before giving an opinion about it.