"LP" or Life Points, are a gameplay element used in Dark Duels. Essentially, they are the life of the player, and when reduced to 0, the game is lost. The amount of Life Points one starts with depends. Most commonly, 3000LP is used in a normal duel, but in tournaments, 5000LP are used in a duel. Life points are lost through the use of Monster and Ability cards.
Sometimes in Unqiue Fights they may have over 5000LP but has have a high risk Knock Out or even possible enough Death.