Lineage features 2D isometric-overhead graphics similar to those of Ultima Online and Diablo II. The game was designed by Jake Song, who had previously designed The Kingdom of the Winds, another MMORPG. Players can choose one of five character classes: elf, knight, wizard, prince/princess, or dark elf. Gameplay features classic RPG elements reminiscent of Dungeons & Dragons, such as killing monsters and completing quests for loot and experience points, levels, character attributes (charisma, strength, wisdom, etc.), and alignments (neutral, chaotic or lawful). Lineage's stat, monster, and item system was originally largely borrowed from NetHack with MMO elements added, but recent updates have introduced more original content. Player versus player combat (also known as PVP) is extensive in Lineage. Players can fight other player characters by joining a "bloodpledge" (an association of players almost like a clan in other games) and then attacking a castle or fighting a pledge war.