Here's why:
* There have been many series after Duel Monsters:
* Yu-Gi-Oh! GX (2004-2008)
* Yu-Gi-Oh! 5D's (2008-2011)
* Yu-Gi-Oh! Zexal (2011-2014)
* Yu-Gi-Oh! Arc-V (2014-2017)
* Yu-Gi-Oh! VRAINS (2017-2019)
* Yu-Gi-Oh! Sevens (2020-2022)
* Yu-Gi-Oh! Go Rush!! (2020-Present)
* Yu-Gi-Oh! (2023-Present)
* The franchise is ongoing: New series, movies, and even video games are still being released.
So, while Yu-Gi-Oh! Duel Monsters is a classic and the series that started it all, it's far from the last!