 Ultimate Health Keg | — | Liquids | 0 | 325 |
 Ultimate Health Potion | — | Liquids | 0 | 3.1 |
 Ultimate Mana Keg | — | Liquids | 0 | 325 |
 Ultimate Mana Potion | — | Liquids | 0 | 3.1 |
 Ultimate Spirit Keg | — | Liquids | 0 | 325 |
 Ultimate Spirit Potion | — | Liquids | 0 | 3.1 |
 Umbral Axe | Weapons | Axe Weapons | 0 | 85 |
 Umbral Blade | Weapons | Sword Weapons | 0 | 59 |
 Umbral Bow | Weapons | Distance Weapons | 0 | 45 |
 Umbral Chopper | Weapons | Axe Weapons | 0 | 115 |
 Umbral Crossbow | Weapons | Distance Weapons | 0 | 125 |
 Umbral Hammer | Weapons | Club Weapons | 0 | 165 |
 Umbral Katar | Weapons | Fist Fighting Weapons | 0 | 74 |
 Umbral Mace | Weapons | Club Weapons | 0 | 85 |
 Umbral Master Axe | Weapons | Axe Weapons | 0 | 80 |
 Umbral Master Bow | Weapons | Distance Weapons | 0 | 40 |
 Umbral Master Bow Test | Weapons | Distance Weapons | 0 | — |
 Umbral Master Chopper | Weapons | Axe Weapons | 0 | 110 |
 Umbral Master Crossbow | Weapons | Distance Weapons | 0 | 120 |
 Umbral Master Hammer | Weapons | Club Weapons | 0 | 160 |
 Umbral Master Katar | Weapons | Fist Fighting Weapons | 0 | 69 |
 Umbral Master Mace | Weapons | Club Weapons | 0 | 80 |
 Umbral Master Slayer | Weapons | Sword Weapons | 0 | 90 |
 Umbral Master Spellbook | Equipment | Spellbooks | 0 | 30 |
 Umbral Masterblade | Weapons | Sword Weapons | 0 | 55 |
 Umbral Slayer | Weapons | Sword Weapons | 0 | 95 |
 Umbral Spellbook | Equipment | Spellbooks | 0 | 35 |
 Umbrella Fern | Decoration | Decorations | — | — |
 Undead Cavebear Soul Core | Other | Soul Cores | 0 | 10 |
 Undead Dragon Soul Core | Other | Soul Cores | 0 | 10 |
 Undead Elite Gladiator Soul Core | Other | Soul Cores | 0 | 10 |
 Undead Gladiator Soul Core | Other | Soul Cores | 0 | 10 |
 Undead Heart | — | Creature Products | 200 | 0.8 |
 Undead Jester Soul Core | Other | Soul Cores | 0 | 10 |
 Undead Mine Worker Soul Core | Other | Soul Cores | 0 | 10 |
 Undead Prospector Soul Core | Other | Soul Cores | 0 | 10 |
 Undertaker Fangs | — | Creature Products | 2,700 | 0.75 |
 Undertaker Soul Core | Other | Soul Cores | 0 | 10 |
 Underworld Rod | Weapons | Rods | 4,400 | 29 |
 Unerring Dragon Scale Armor | Equipment | Armors | 0 | 135 |
 Unholy Bone | — | Creature Products | 480 | 1.25 |
 Unholy Book | Decoration | Books | 30,000 | 13 |
 Unicorn Figurine | Other | Valuables | 50,000 | 6.5 |
 Unicorn Painting | Decoration | Decorations | — | — |
 Unicorn Weisswurst | — | Food | 0 | 5 |
 Unity Charm | Other | Blessing Charms | 0 | 10 |
 Universal Tool | Other | Quest Items | 0 | 3 |
 Unlit God Torch | — | — | — | — |
 Unliving Demonbone | Weapons | Club Weapons | 0 | 180 |
 Unrealized Dream | Other | Valuables | 0 | 33 |