All of the chests in Idle Pixel may be opened with different crafted Keys.
Regular Chests
Regular treasure chests are rewarded when solving the riddle from a Regular Treasure Map.
Blue Orbs have a 1/36 chance per slot to be looted when opening a regular chest.
Green Chests
Green treasure chests are rewarded when solving the riddle from a Green Treasure Map and may be opened with different Keys from Crafting.
Green Orbs have a ???? chance per slot to be looted when opening a green chest.