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Immutable X was Immutable’s first rollup, which was merged into Immutable Chain in early 2026. Built in partnership with StarkWare as a customised deployment of 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 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). 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 auomatically, but many games and projetcs chose to implement custom logic for migrating their assets. In these cases, please consult with the project directly.

Deprecation Process and Status

All Immutable X functionality is now deprecated and will be removed in future.
InterfaceStatus
Sequencer RPC (Writes)No longer processing new transactions
Sequencer RPC (Reads)Deprecated, will be removed in future
ExplorerDeprecated, will be removed in future
MarketplaceRemoved
@imtbl/sdk (Immutable X code and packages)Deprecated
@imtbl/core-sdkDeprecated, please migrate to @imtbl/sdk
@imtbl/imx-sdk-jsDeprecated, please migrate to @imtbl/sdk