Candle

Candles are items that appear in The Legend of Zelda and Zelda II: The Adventure of Link. In both games, candles are used to illuminate dark areas.

The Legend of Zelda
In The Legend of Zelda, there are two types of candles: the Blue Candle and the Red Candle. The Blue Candle can be purchased for 60 Rupies from a specific merchant. The Red Candle replaces the Blue Candle, and Link can obtain it in the labyrinth Demon. The Blue Candle can only produce one flame per screen, but the Red Candle can produce an unlimited number of flames.

When Link uses either candle, it sends out a flame in front of him. The flame can either defeat enemies or illuminate a darkened screen that Link is currently in. The flame is left behind for a few seconds before disappearing, and it injures anyone who comes in contact with it, including Link. In the overworld, Link can use the Red or Blue Candle to burn bushes, which reveals a staircase.

Zelda II: The Adventure of Link
In Zelda II: The Adventure of Link, a candle is the first dungeon item, and it is located in Parapa Palace. The candle illuminates dark caverns, allowing Link to see the path and enemies ahead. The candle is similar to the Red Candle from the first game because it is a red flame and has unlimited uses. The candle cannot be used as a weapon.

Hyrule Warriors
In Hyrule Warriors, Candles appear as Item Cards in Adventure Mode. Additionally, the 8-Bit Candle was added in the Master Quest Pack DLC. It is classified as a Magic Rod used by Link, and is an equivalent to the Magical Rod. It does not reappear in Hyrule Warriors Legends, but returns in Hyrule Warriors: Definitive Edition, where it aesthetically replaces the Crackling Rod in the 8-Bit Weapons setting. Both Candles are based on the Red Candle from The Legend of Zelda.

The Legend of Zelda

 * Manual: "Some of the rooms inside of the labyrinths are really dark. So use these to brighten them up. Blue candles are good for one screen only, but the red ones can light up rooms for several screens."
 * The Legend of Zelda: Collector's Edition Player's Guide (page 6): "Attack enemies and illuminate dark rooms. The Blue Candle can burn once per room; the Red Candle, several times."

Zelda II: The Adventure of Link

 * Manual: "When this is obtained, places that you had not been able to see until now because of the dark are lit up."
 * The Legend of Zelda: Collector's Edition Player's Guide (page 28): "The handy candle allows you to light your way in dark caves. You'll be lost (and helpless) without it."