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Ember Sword — Immutable X Migration

May 31, 2022

That's right, it's time! As you may be aware, we previously published a blog announcing our partnership with Immutable X to ensure we are laying the best possible foundations for Ember Sword and our community.

We have many great reasons for this partnership --- massive speed and responsiveness for transactions, increased accessibility, improved security, the ability to pay with a credit card, and more. Additionally, upon migration, badge holders will benefit from changing their ERC-1155 to non-fungible ERC-721, making each of them fully unique. All in all, this is another step towards making Ember Sword secure and, more importantly, accessible to as many people as possible.

On May 31st 2022, we announced that we would be switching platforms from Polygon to Immutable X. Users who hold Digital Assets with us are fully responsible to migrate their Digital Assets from Polygon's platform to IMX within 18 months of the original announcement, i.e. by December 1st 2023. Digital Assets which have not been migrated will from December 1st 2023 no longer be supported. For more information on this, please contact our support team.

One of the main points of the previous announcement was that our current land and/or badge holders would need to migrate their NFTs from Polygon to Immutable X. After a lot of optimizing and setting up processes, as you can probably guess by the title, it's time for you to learn how to do just that!

The migration process goes live on the first Monday of every month and runs for a week. Head over to to migrate your assets during that window.

Reward Program Details

We here at Ember Sword, alongside Immutable X, have created a rewards program as a way to give you a little token of our appreciation.

Here's how this is going to work --- we have set aside a pool of 20,000 IMX tokens. Users will be rewarded with 1 IMX token per asset transferred. These tokens will be distributed on a first come, first serve basis while supplies last. Simple, right?

This method was chosen due to how uncomplicated it is, while also making sure that a broad range of people can benefit from it. To do that, we have put in place a cap of 150 IMX tokens per person in order to ensure as many people as possible get a chance to partake in the reward program.

Do be aware that we would never ask for your password or keys, nor would we ever communicate with asset holders outside of our official channels. Exercise due diligence in all matters related to your Ember Sword assets. To stay up-to-date on any security concerns, consider joining our Discord, where we frequently update our community on things to watch out for.

With all that said, let's see exactly how the migration process works.

The Migration Process

Before we start, we should note that the migration process is easiest on a personal computer. However, you can also initiate the process on mobile by following these steps:

1: Go to and connect your wallet --- IMX has made a guide on how to do that here:

2: Go to the MetaMask App, open the browser window and enter

3: You can now start the migration process!

Onto the guide. To make migrating from Polygon to Immutable X as easy as we could, we have made it possible to complete migration on PC without ever having to leave our website. We have also created a handy video tutorial (alongside the text one below), which you can watch at this link. Please also note that having any adblocker software installed might affect the transfer process. As such, if you experience problems, try disabling your adblock and restarting the process.

Step 1 --- log into your Ember Sword account. If you do not have an account yet (say you've bought your land/badge on the secondary market), you can register here.


Once you've successfully logged in, you will be taken to Step 2 --- Connecting your digital wallet.


We are using MetaMask here as an example, however please note that most Web3 compatible wallets should work. We have run tests with multiple ones to make sure of that, including the likes of Coinbase hot wallet and Nano Ledger.

Step 3 --- Connect Immutable X to your Web3 wallet.

A pop-up will appear, asking you if you want to switch networks. Click on "Switch network":


This will lead to another pop-up, asking you to connect Immutable X to your wallet:


You will be taken to a menu with all your available wallets. Select the one you want to connect (the one containing your Ember Sword assets) and click "Next" and then "Connect":



Next, click "Connect" on the Immutable X pop-up. That will send a signature request to your wallet:



This will lead into Step 4 --- Transferring your Polygon assets to Immutable X.

The process will confirm which assets you have in your wallet. You will again have a MetaMask pop-up, prompting you to allow the addition of a network to your MetaMask account (with the same example parameters as above). Click "Approve" and then "Switch network".


The transfer will incur some gas fees (in MATIC), which will be shown in the next pop-up. The gas fees are part of the transfer, as you're migrating networks.


Upon confirmation, the migration will begin.

Your transfer is now in progress and you can safely exit the browser window. Upon its completion (which can take up to 14 days), you will be notified via email if the transfer has been successful.


And that's it! You have successfully migrated your Ember Sword NFTs to Immutable X.

Once again, the process goes live on the 8th of June. To stay up-to-date on all things Ember Sword, make sure to follow us on our socials and join our Discord.


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