You mean other than the fact that it's the most popular game that my world has to offer, to the point where most people build their entire careers around it? [pause] Well, it probably has something to do with the fact that people like Seto Kaiba and Pegasus decided one day to use technology to try to make it look like the cards could be brought to life, and it caused the game to explode in momentum in getting everyone to play it to see the life-like monsters for themselves.

You've seen me summoning dragons and stuff before during missions to block off enemies or take a hit, right? Those are my Duel Monster cards being projected as hard light holograms with my Duel Disk, which has some of the most recent tech and programming back home to give it that edge over other older models.