 | Brittle Plating | Brittle material used to upgrade armors. | Materials | 1 |
 | Brittle Quartzite Shard | A nugget that seems useful for one thing: upgrading weapons. | Materials | 1 |
 | Brittle Whetstone | Brittle material used to upgrade weapons. | Materials | 1 |
 | Broodmother Chandelier | An ominously serene light source crafted from the pieces of a fallen Broodmother. | Building & Utilities | |
 | Broodmother Chunk | An unidentifiable piece of the demonic mother spider. | Materials | 3 |
 | Broodmother Fang | An extremely deadly fang of the demonic mother spider. | Materials | 3 |
 | Broodmother Rocking Chair | A majestic chair crafted from the pieces of a fallen Broodmother. | Building & Utilities | |
| Broodmother Trinket | Rare memento from the Broodmother. (Playground Exclusive) | Trinkets | 3 |
 | Broodmother Venom | Shockingly potent venom from the demonic mother spider. | Materials | 3 |
 | Broodmother Wall Mount | A wall-mounted trophy of a hard-earned kill. Activate to receive a temporary damage bonus against this creature. | Building & Utilities | |
 | Bubble Diffuser | Diffuses bubbles in an area to facilitate breathing underwater. | Building & Utilities | |
 | Buffin' Barrel | A training station used to buff up your buggies' abilities. | Buggies | |
 | Buffin' Gland | A mutated gland pulsating with candy flavor. It can trigger a critical buffin' event for one of your Buggies. | Materials | 3 |
 | Bug Rubber | A handcrafted sludge of sap and carefully milked acid gland that hardens into a makeshift rubber material. | Materials | 1 |
 | Bunk Bed | A simple yet comfy bed that offers up a good night's sleep. Waking up here really pumps you up for the day. | Building & Utilities | |
 | Buoyant Foundation | A floating surface perfect for supporting structures built over water. | Building & Utilities | |
 | Buoyant Foundation Ramp | A floating ramp'd surface perfect for supporting structures built over water. | Building & Utilities | |
 | Buoyant Marker | Transmits a trackable visual signal so you can find your way back to a location. | Building & Utilities | |
 | Bur Curved Floor | A pie slice segment of a bur floor. | Building & Utilities | |
 | Bur Curved Half Floor | An elbow macaroni shaped variant of the bur curved floor. | Building & Utilities | |
 | Bur Curved Outer Floor | A curved floor designed to fit around the outside of a curved wall. | Building & Utilities | |
 | Bur Floor | A scratchy, intricate floor made of spiky burs. | Building & Utilities | |
 | Bur Half Floor | The halved version of the bur floor. | Building & Utilities | |
 | Bur Hatch | Hinged opening that provides access through a floor or ceiling. It can be manually opened from above or below. | Building & Utilities | |
 | Bur Partition | A slim, folding screen designed to add privacy to an indoor space. | Building & Utilities | |
 | Bur Quarter Floor | A quartered floor section for filling gaps in clumsy construction. | Building & Utilities | |
 | Bur Quarter Hatch | Hinged opening that provides access through a floor or ceiling. It can be manually opened from above or below. | Building & Utilities | |
 | Bur Trap Door | A hinged opening that can be placed on the floor or ceiling. It will automatically swing open if anything steps on it. | Building & Utilities | |
 | BURG.L OS Chip | A mint condition Ominent chip containing operating system data for a BURG.L Mark IV grilling robot. A fresh reinstall may help your friend regain the power of full sentences. | Key Items | |
 | BURG.L Rug | A comfy rug that really ties the room together. | Building & Utilities | |
 | Burny Rounds | These hot little suckers can set the ground around them ablaze. Handle with caution. | Ammo & Throwables | 2 |
 | Bushwacker | A modified Spider Stringer, tuned to make your first shot count. | Weapons | 2 |
 | Buster Cap Gun | A toy pistol that ignites small caps of powder, making a popping noise. Popular among noisy kids. | Key Items | |
 | Butterfly Boots | A stylish pair of berry leather boots. Fit for a chill mage. | Armor | 2 |
 | Butterfly Circlet | A mage circlet adorned with a frosty mint shard. | Armor | 2 |
 | Butterfly Robes | Dazzling mage robes made from blue butterfly scales. The robes make staff attacks a breeze. | Armor | 2 |
 | Button | A simple button. Link it to other things to perform actions. You can customize the color. | Building & Utilities | |
 | Buzzin' Buggies | Your deepening bond with buggies inspires them to sprint longer. | Mutations | |
 | C.K.U. | A battered Catch and Kill Unit found patrolling the depths of The Abyss. | Key Items | |
 | C.K.U. | A battered Catch and Kill Unit found patrolling the depths of The Abyss. | Key Items | |
