So in fact it's more like, or exactly the same, as the Yuugi Ou! Nightmare Troubadour for NDS. I like YGO! more though, because Egyptian and occult themes, and "darker" atmosphere. I don't know if C!!V gets more serious later on...
I only watched the first 30 episode of CFV and then just went and bought the cards and started playing/deck building. The thing I like most about it is that it's not a Yu Gi Oh ripoff, the game is so original and fun to play. It's a lot faster paced than Yu-Gi-Oh. You should watch a couple of episode of the anime to get to know how to play/how the game works. It's definitely my favourite card game of all time. It just sucks that no one in my area (except for my brother) plays the game. But now I can play all day long.