In this game you must name a monster (and say it's Atk and Def too), however, the monster you name must have an ATK equal to the DEF of the monster that the person above you said.You cant add a monster with an Atk or Def of like 1530.
Here's an example:
Person 1 says: Blue eyes White Dragon (3000 ATK/2500 DEF)
Since BEWD has 2500 DEF the next person must name a monster with 2500 atk, so person 2 says: Stardust Dragon (2500 ATK/2000 DEF)
And then the next person must name a monster with 2000 ATK and so on.
Ok, So I'll start with one of my favorite monsters: Elemental Hero Shining Flare Wingman (2500 ATK/2100 DEF)