"Kazuki Takahashi, the creator of Yu-Gi-Oh! franchise, launched a game called Advent Heroes on his Studio Dice website on Friday. Takahashi, a longtime fan of American comics, drew inspiration from them for his new project. Unlike other games such as Yu-Gi-Oh! itself, Advent Heroes uses a standard 52-card playing card deck."
See full article on ANN here, game overview on Studio Dice here, rulebook here, and walkthrough here. The walkthrough has pictures.