Forge

The Forge is a type of room that is unlocked by defeating 500 enemies and appears in one scene within every biome, and is guaranteed to spawn in 3-3 (it's possible to get 2 Forge rooms in the third biome). Its function is to allow the player to buy, upgrade and customize weapons at the cost of Soul Stones or Gold.

When entering the Forge, you'll see a furnace in the center of the room. To the right of the furnace is a fat man, to the left of the furnace is a woman. Both NPCs have different functions and ways of upgrading your currently equipped weapon.

## Weapon Shop

The man provides you with several services, and the first is the Weapon Shop. If you interact with him and decide to buy a weapon, you're taken to a menu where four different weapons with different affixes (at least one) are shown. You can buy any of these weapons by using Gold. These are the prices for all weapons sold here:

* Uncommon: 96 Gold
* Rare: 168 Gold
* Epic: 240 Gold
* Legendary: 312 Gold

Once the weapon has been bought, the man will drop it on the ground for you to pick up and the weapon will disappear from the shop menu.

Apart from buying weapons, the shop has another function: you can see your Inventory while in the shop menu, and looking at the weapon you have equipped you will notice that there is a red button beneath it labelled "Sell". This allows you to sell your current weapon, destroying it and rewarding you with Gold. The amount of Gold gained from this process is half the price of the weapon in the shop, but gives 20% more Gold than selling the weapon on the ground. Note that this Gold is added directly into your inventory, so it does not benefit from Lucky Cat. These are the exact prices for selling weapons in the Forge:

* Common: 12 Gold
* Uncommon: 48 Gold
* Rare: 84 Gold
* Epic: 120 Gold
* Legendary: 156 Gold

## Power Switch

Another service is Power Switch, which is unlocked by buying 3-4 weapons from the weapon shop. After unlocking, the man, when interacted with, also asks if you want to enhance your weapon by using Power Switch. At the cost of Soul Stones, you can tap on one of your weapon's affixes and it will be removed, then you will be given three different affixes to choose from. The one you pick will replace the previous affix. Now, the diamond shape next to the affix you changed will become white: you can no longer use Power Switch on that affix. However, this can be remedied by using Weapon Enhancement Vouchers: you can spend one voucher before Power Switching to keep the Power Switch chance from being consumed, or you can spend one afterwards to free up that affix for Power Switch again. Power Switch can also be performed on the Category affix of the weapon, in which case you will get to choose between three different combinations of categories.

## Power Infusion

Power Infusion is a service provided by the woman and unlocked after buying 5 weapons and switching a weapon's affixes 5 times. The woman, when interacted with, asks if you want to get your weapon infused at the cost of some Soul Stones. Infusing your weapon gives it a chance to gain a new random affix, raising its effectiveness and its rarity. Legendary weapons cannot be infused. Depending on the amount of affixes your weapon already has, the infusing price will be different. Once the price is paid, the infusion process will begin and the weapon gets a chance to gain a new affix, shown on top of an anvil in the infusion menu. If the infusion is successful, the weapon will get a golden hammer icon on it, signifying that it's been infused. If the infusion fails, it will get embrittled and gain a broken sword icon. Either icon on your weapon bars it from being infused again. By spending a weapon enhancement voucher before infusing, you can make the process safer by ensuring the weapon will not be embrittled if the infusion fails, allowing you to keep trying until it works.

The chances that Power Infusion will be successful depend on the rarity, and are as follows:

* Common: 90%
* Uncommon: 70%
* Rare: 50%
* Epic: 30%

## Vouchers

Vouchers are an important but rare resource that can help you perfect the weapons you find to improve your chances in the Mirage. Through Daily Activities, it's possible to gain one of these every day, but they can also be obtained at the Living Room Shop by spending real money.

## Weapon vending machine

The weapon vending machine is located in the bottom right of the Forge room, and has a white cat on top of it. After interacting with it, the cat will suggest you spend 100 Gold on a random weapon that will drop near it. The weapon can be of any rarity, including common. After several weapon drops, the machine begins to shake and burn and the cat will have question marks around its head. If you try to spend money again after that, the vending machine will still drop a weapon, but will explode, dealing 40 damage and leaving the blackened cat on the ground. Note that if the weapon vending machine explodes, it won't appear in Forge rooms for the rest of the current run.