Yu-Gi-Oh is the worst card game I've ever played. You have to sit there and read every card on the table like they're mini Instruction Manuals. There is no underlying narrative, no flavor text to give you some idea on why these particular cards exist like MtG. In my experience the most socially awkward people are invested in it. The cartoon they're based on goes by rules the card game doesn't, and it's a continual bout of "This card negates that card negates that card negates...". How it has remained popular for about 15 years is truly dumbfounding. Even in Tournaments I'm told a lot of cards are banned, kinda defeating the purpose of playing. This may not be wholly unpopular or controversial among a bunch of wrestling fans, but go into any school cafeteria and you're bound to see twenty-somethings dueling. It's a massive waste of time and energy. And there's Math involved.