Last War Crystal Factory Guide: How to Unlock, Upgrade & Get Amethyst Crystal


By - Che Browndon
Written-on - August 24, 2026

Crystal Factory in Last War: Survival

Crystals Factory is new in Last War because it’s part of the Crystal Event. It’s a very important building in the game because it’s used for producing Amethyst Crystal. Amethyst Crystal is really good because it can be exchanged for rewards in the Crystal shop in Last War: Survival game. This article is going to talk about Crystal Factory. Aside from Crystal Factory, I will also talk about Crystal Shop and the Crystal Boss because all of these three are connected.


What is Crystal Factory in Last War: Survival Game


The Crystal Factory is a new building that was introduced in the Crystal Event. This building is very valuable because it produces Amethyst Crystal automatically over time. The production happens even when you leave the game and go offline so it doesn’t require internet connection. The Amethyst crystals can be spent in the Crystal shop so it’s honestly a very valuable resource. I spoke about how the Crystal Factory is connected to Crystal shop and Crystal Boss and it’s very true. This is because the Crystal Factory is like the entry point for the Crystal shop and Crystal Boss.

The Crystal Factory is in levels so it’s like most buildings in the game. In the first level (Level 1), the Crystal Factory produces 4 Amethyst Crystals every 3 hours. There’s a cap on production though but it’s like 2 days (it can accumulate up to 48 hours of production).


How to Unlock the Crystal Factory in Last War: Survival



In order to unlock Crystal Factory in Last War: Survival;

- Your server should reach Day 1 of the Season 1 Pre-season or later.

- Secondly, your base must be at least Level 20 or higher.

The requirement in this case is based on your server progression and not how long you’ve played the game. Time matters but your server progression matters more. Once these two requirements are met, the Crystal Factory will become available to build.


How to Build Crystal Factory


Once you’ve fulfilled the requirement, you will get the option to build Crystal Factory. You can construct the Crystal factory via the Economy Building menu. The construction cost isn’t a lot to be honest. I think its 60 Food and 60 Iron. The construction time isn’t also long which is good. You just need to try to fulfill the requirement to get access to the Crystal Building and from there, everything will become easier.


How to Upgrade the Crystal Factory in Last War: Survival


Upgrading the Crystal Factory in Last War: Survival increases your Amethyst Crystal production and it also increases your Maximum production. Storage time. To upgrade your Crystal Factory, you will need Crystal Ore material. This case us very interesting because its not really easy to frequently come by Crystal Ore. You can get Crystal Ore in Last War: Survival by playing daily tasks and their progress chest.

Crystal Factory level 1 gives you 4 Amethyst Crystal for every 3 hours. To go to Level 2, you will need 2,000 Crystal Ore. However, once you get to Level 2, your Amethyst Crystal production will increase to 8 Amethyst Crystal per 3 hours.


What Can You Buy With Amethyst Crystal in Last War: Survival Game


Crystal Factory Shop in Last War: Survival

You can use the Amethyst Crystal in the Amethyst Shop to get what you want. The things you can use your Amethyst Crystal to buy in the Amethyst Shop include Gold Bricks, Silver Bricks, and Diamonds, Weekly pass (Take All) Vouchers and the Total Mobilization Vouchers. For these Vouchers, every month in the game has a redemption limit and it usually resets on the 1st of each month so it’s good that you use these Vouchers before then or else it will feel like you wasted your Amethyst Crystal.


The Two Main Ways of Getting Amethyst Crystal in Last War: Survival Game(The Crystal Boss)


Crystal Factory Boss in Last War: Survival

The first way is through the Crystal Factory and this entire article has highlighted the process. The Factory generates you Amethyst Crystals passively meaning you don’t even have to be online to see the benefits of your work. You just need to check after every 2 days.

The second method is the Crystal Boss. Once your server reaches Season 1 Day 1, you can challenge the Crystal Boss for additional Amethyst Crystals and other rewards in the game. The Boss appears from Monday to Saturday and you can challenge him up to 3 t times a day so that’s actually a lot. This way you can generate Amethyst crystals actively while your Crystal Factory does it passively.


Closure


The Crystal Factory is an important aspect of the Crystal Even in Last War because it’s a way you get to farm Amethyst Crystals and exchange it with valuable resources at the Crystal Shop. To meet the unlock requirement for Crystal Factory, make sure your base is at least Level 20 and your server should have reached the required Season 1 stage then you can build. Once you build the Crystal Factory, try to collect your crystals regularly. You can upgrade your crystal factory with 2,000 Crystals Ore’s to increase its production.


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