In Attack Position (called Attack Mode in the anime), a Monster Card is face-up, in a Vertical Position. In this position, the ATK value is used to represent this card, except where a card effect requires a specific examination of the DEF value.
Attack Position monsters should always be face-up. The only time when a face-down Attack Position Monster Card is acceptable is when it is placed that way by the effect of the card "Darkness Approaches".
Types of Monster Cards
Types of Spell Cards
Types of Trap Cards
ATK • DEF • Level • Attribute • Type
Playing Field Zones
Types of Summon
Types of Monster Effects
Types of Effect Monsters
Types of Spell Speed
Aqua • Beast • Beast-Warrior • Dinosaur