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How to Use the Unknown Key in The Forge

Lim How Wei
December 2, 2025

The Forge is a Roblox simulator game of crafting and selling medivial weaponry.

Gather raw materials like metal ores, then smelt, forge, and refine them.

Upgrade your forge, equipment, and efficiency to craft powerful and valuable weapons.

As you progress, you’ll unlock new blueprints and advanced techniques.

In this quick and easy guide, you’ll learn how to use the Unknown Key in The Forge (Roblox) and where to get it (its location).

How to Use the Unknown Key in The Forge

  1. Enter the cave (southeast of Stonewake’s Cross) and go down the slope.
  2. Turn right and go all the way straight until you reach a gate.
  3. Press “E” to open the gate with the Unknown Key.
  4. Enter the Fallen Angel’s Cave and you can buy the Arcane Pickaxe for 125,000 gold.

To get the Unknown Key, you must complete the Bard’s Quest by finding his guitar and giving it to him.

Further reading

How to Find Bard’s Guitar in The Forge

Isaac Quest Guide in The Forge

List of Steal a Brainrot Admin Commands

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Lim How Wei

Lim How Wei is the founder of followchain.org, with 10+ years of experience in Social Media Marketing and 5+ years of experience as an active investor in stocks and cryptocurrencies. He has researched, tested, and written thousands of articles ranging from social media platforms to messaging apps.

Lim has been quoted and referenced by major publications and media companies like WikiHow, Fast Company, HuffPost, Vice, New York Post, The Conversation, and many others. One of his articles about the gig economy was quoted by Joe Rogan, who hosts The Joe Rogan Experience (the most popular podcast in the world), in the This Past Weekend podcast (the third most popular podcast in the world as of 2026) by Theo Von.

In his free time, Lim uploads personal finance videos on his YouTube channel, Lim Finance, to guide others on their financial journey. He also creates gaming guides, walkthroughs, solutions, and tips for the games he plays, helping players with their progression.