 Closed Trap | — | Tools | 75 | 21 |
 Cloth Fragment (Almanac) | Decoration | Floor Decorations | — | — |
 Cloth Fragment (Book) | Decoration | Floor Decorations | — | — |
 Cloth Fragment (Cobra) | Decoration | Floor Decorations | — | — |
 Cloth Fragment (Cube) | Decoration | Floor Decorations | — | — |
 Cloth Fragment (Idol) | Decoration | Floor Decorations | — | — |
 Cloth Fragment (Ring) | Decoration | Floor Decorations | — | — |
 Cloth Fragment (Sapling) | Decoration | Floor Decorations | — | — |
 Cloth Fragment (Sword) | Decoration | Floor Decorations | — | — |
 Cloud Familiar | — | Creature Products | 0 | 0.5 |
 Cloud In a Bottle | — | Taming Items | 0 | 0.45 |
 Cloud of Earth Energy | — | Utilities | — | — |
 Club | Weapons | Club Weapons | 1 | 25 |
 Club of the Fury | Weapons | Club Weapons | 0 | 5 |
 Club Ring | Equipment | Rings | 100 | 0.9 |
 Cluster of Blue Crystals | — | Rocks | — | — |
 Cluster of Crystallized Death | — | Creature Products | 9,000 | 10 |
 Cluster of Green Crystals | — | Rocks | — | — |
 Cluster of Red Crystals | — | Rocks | — | — |
 Cluster of Solace | Other | Creature Products | 0 | 2.8 |
 CM Token | Decoration | Contest Prizes | 0 | 10 |
 CM Token (15th Anniversary) | Other | Valuables | 0 | 10 |
 Coal | — | Creature Products | 20 | 5 |
 Coal Basin (Big) | — | Illumination | — | — |
 Coal Basin (Ember, Green) | — | Illumination | — | — |
 Coal Basin (Ember, Yellow) | — | Illumination | — | — |
 Coal Basin (Furniture) | — | Illumination | — | — |
 Coal Basin (Small) | — | Illumination | — | — |
 Coal Basin Kit | Decoration | Furniture | 0 | 35 |
 Coal Eyes | — | Creature Products | 0 | 6.5 |
 Coat | Equipment | Armors | 1 | 27 |
 Cobalt Ridge | Other | Valuables | 0 | 1.75 |
 Cobra Assassin Soul Core | Other | Soul Cores | 0 | 10 |
 Cobra Axe | Weapons | Axe Weapons | 0 | 40 |
 Cobra Bo | Weapons | Fist Fighting Weapons | 0 | 56 |
 Cobra Boots | Equipment | Boots | 0 | 9 |
 Cobra Club | Weapons | Club Weapons | 0 | 25 |
 Cobra Crest | — | Creature Products | 650 | 1.7 |
 Cobra Crossbow | Weapons | Distance Weapons | 0 | 40 |
 Cobra Crown | Equipment | Helmets | 50,000 | 8.5 |
 Cobra Hood | Equipment | Helmets | 0 | 27 |
 Cobra Rod | Weapons | Rods | 0 | 25 |
 Cobra Scout Soul Core | Other | Soul Cores | 0 | 10 |
 Cobra Soul Core | Other | Soul Cores | 0 | 10 |
 Cobra Sword | Weapons | Sword Weapons | 0 | 63 |
 Cobra Tongue | — | Creature Products | 15 | 0.75 |
 Cobra Vizier Soul Core | Other | Soul Cores | 0 | 10 |
 Cobra Wand | Weapons | Wands | 0 | 19 |
 Cobrafang Dagger | Other | Quest Items | 0 | 6 |
 Cockroach Leg | — | Creature Products | 0 | 0.1 |