> ## Documentation Index
> Fetch the complete documentation index at: https://docs.immutable.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Immutable X Deprecation

Immutable X was Immutable's first rollup, which was merged into [Immutable Chain](/docs/products/immutable-chain/overview) in early 2026.

Built in partnership with [StarkWare](https://www.starkware.co/) as a customised deployment of [StarkEx](https://www.starkware.co/starkex), Immutable X processed hundreds of millions of transactions and billions of dollars in game asset trading volume.

# Merge with Immutable Chain

The Immutable X [bridge](/docs/products/immutable-chain/bridging) was merged with the primary bridge for Immutable Chain through a non-custodial bridge contract upgrade.

If you had ETH, IMX or any other ERC-20 on Immutable X, your assets were migrated directly to Immutable Chain, and are available in the same wallet you used on Immutable X (e.g. MetaMask, [Passport](/docs/products/passport/overview)). Immutable had no access to your private keys or funds during this process.

If you had NFTs on Immutable X, their status depends on the specific game and collection. Most assets were migrated automatically,
but many games and projects chose to implement custom logic for migrating their assets. In these cases, please consult with the project directly.

<CardGroup cols={2}>
  <Card title="Migration Contracts" icon="bridge" href="https://github.com/immutable/imx-migration-contracts">
    Bridge upgrade smart contracts
  </Card>

  <Card title="Migration Audit" icon="shield" href="https://github.com/immutable/imx-migration-contracts">
    Nethermind audit report
  </Card>
</CardGroup>

# Deprecation Process and Status

All Immutable X functionality is now deprecated and will be removed in future.

| Interface                                          | Status                                     |
| -------------------------------------------------- | ------------------------------------------ |
| Sequencer RPC (Writes)                             | No longer processing new transactions      |
| Sequencer RPC (Reads)                              | Deprecated, will be removed in future      |
| [Explorer](https://immutascan.io)                  | Deprecated, will be removed in future      |
| [Marketplace](https://marketplace.x.immutable.com) | Removed                                    |
| `@imtbl/sdk` (Immutable X code and packages)       | Deprecated                                 |
| `@imtbl/core-sdk`                                  | Deprecated, please migrate to `@imtbl/sdk` |
| `@imtbl/imx-sdk-js`                                | Deprecated, please migrate to `@imtbl/sdk` |

## Next Steps

<CardGroup cols={2}>
  <Card title="Chain Overview" icon="link" href="/docs/products/immutable-chain/overview">
    Learn about Immutable Chain
  </Card>

  <Card title="Bridging" icon="bridge" href="/docs/products/immutable-chain/bridging">
    Understand bridge migration
  </Card>

  <Card title="Passport" icon="id-card" href="/docs/products/passport/overview">
    Set up Passport wallet integration
  </Card>

  <Card title="Contracts" icon="file-contract" href="/docs/products/asset-contracts/overview">
    Deploy NFT contracts on Immutable Chain
  </Card>
</CardGroup>