The Ruby Greatsword is a warrior weapon in Dungeon Quest. It specializes in physical power, having a base average of 47,000. The Ruby Greatsword can be upgraded with gold to improve its physical and spell power. It can be sold for a minimum of 900,000 gold, and requires players to be at least level 96 to equip it. It can be obtained from the Samurai Palace dungeon dungeon on Nightmare difficulty, and is the second best warrior weapon from said difficulty.