Treasure Boxes are scattered all around the Clockworks! It is unknown how or why Treasure Boxes are inside the depths, but many of them contain goodies for knights to loot.
- Green Treasure Boxes usually contain heat, crowns, a pickup, or a vitapod when the boxes are broken. Sometimes, a treasure box may contain a crafting material or a token, or even more rarely, a piece of equipment.
- Red Treasure Boxes hold similar contents, but usually have more heat or crowns than the green treasure boxes.
- Heart Treasure Boxes are marked with a heart on top and will always contain hearts that heal Knights.
- Grinchlin Treasure Boxes contain unique materials used to craft Winterfest-themed gear. Unlike regular Treasure Boxes, they can only be found in the Grinchlin Assault! Danger Mission.
On some levels, the color of Treasure Boxes may appear differently due to colored haze graphical effects.