Immutable (IMX): how it works, supply and reviews
In short
- Type
- Gaming chain built on Ethereum from a geth fork; Immutable calls it a layer-2 blockchain purpose-built for games
- Maximum supply
- 2,000,000,000 IMX
- Risks and caveats
- Immutable Chain runs Clique proof-of-authority consensus, and its Ethereum bridge relies on Axelar messaging rather than ZK proofs today.
- Checked
- 31 October 2026
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Key facts
- Ticker
- IMX
- Official site
- immutable.com
Key facts checked on 31 October 2026 against official sources.
What is Immutable
Immutable is a gaming technology company whose Immutable Chain (Immutable zkEVM) is an EVM-compatible chain built for games on Ethereum. IMX, issued by the IMX token foundation, is the chain's gas token and can be staked; Immutable's earlier StarkEx rollup, Immutable X, was merged into Immutable Chain in early 2026.
Network and consensus
| Parameter | Details |
|---|---|
| Type | Gaming chain built on Ethereum from a geth fork; Immutable calls it a layer-2 blockchain purpose-built for games |
| Consensus | Node software reports Clique proof-of-authority consensus |
| Chain ID | Immutable zkEVM mainnet chain ID 13371; gas token IMX |
| Block time | About 2 seconds, with finality in about 2 seconds |
| Smart contracts | Geth fork aligned with Ethereum's Cancun fork; Solidity up to 0.8.28; blob transactions not supported |
| Bridge | The canonical Ethereum bridge uses Axelar for cross-chain messaging; ZK proofs are planned |
Supply and issuance
| Parameter | Details |
|---|---|
| Maximum supply | 2,000,000,000 IMX |
| Initial distribution | Ecosystem development 51.72%, project development 25%, private sale 13.86%, public sale 5.42%, foundation reserve 4% |
| Fee mechanism | 20% of the protocol fee on each Immutable transaction is paid in IMX and reserved for staking rewards |
What IMX is used for
- Gas on Immutable Chain
- Staking, provided by the IMX token foundation
- Governance votes on ecosystem proposals via Snapshot
- Part of protocol fees is paid in IMX
Who develops and governs Immutable
- Developer
- Immutable Pty. Ltd. is the exclusive technology service provider; it also develops Gods Unchained and Guild of Guardians
- Foundation
- IMX is issued by a foundation: Digital Worlds Ltd. NFTS (British Virgin Islands) in the 2023 whitepaper, the IMX Ecosystem Foundation in current docs
- Governance
- IMX holders vote on token-related proposals; the foundation curates which proposals go to a vote
- Open source
- The Immutable geth fork, bridge contracts and migration contracts are published on GitHub
History
| Date | Event |
|---|---|
| 2018 | Immutable raises a seed round, followed by a USD 15 million Series A in September 2019. |
| 7 March 2024 | IMX liquidity rewards start on the newly launched Immutable zkEVM chain. |
| 2026 | Immutable X, the StarkEx-based rollup, is merged into Immutable Chain; its assets migrate through a bridge upgrade. |
Security and audits
- The bridge has flow-rate limits: large withdrawals are queued for 24 hours and bursts above capacity are held for manual review.
- Bridge contracts and the Immutable X migration contracts have published audit reports (migration audited by Nethermind).
Security incidents
| Date | What happened | Source |
|---|---|---|
| 21 September 2024 | Hack: Immutable says a Discord incident began at 4:05 PM UTC on 21 September 2024 and that an employee posted in its Discord within two hours with the issue contained. Funds returned: not stated | x.com |
Official IMX contracts
| Network | Contract address |
|---|---|
| Ethereum | 0xf57e7e7c23978c3caec3c3548e3d615c346e79ff |
| Immutable Chain (wIMX) | 0x3a0c2ba54d6cbd3121f01b96dfd20e99d1696c9d |
IMX is native on Immutable Chain and an ERC-20 on Ethereum; wIMX is the wrapped ERC-20 on Immutable Chain.
Risks and caveats
- Immutable Chain runs Clique proof-of-authority consensus, and its Ethereum bridge relies on Axelar messaging rather than ZK proofs today.
- Immutable X is deprecated: its sequencer no longer processes new transactions and remaining interfaces will be removed.
- Immutable's main website now leads with an AI growth platform for games; the chain is an opt-in product.
Official links
- Website: www.immutable.com
- Docs: docs.immutable.com
- Block explorer: explorer.immutable.com
- Token site: imx.community
- Source code: github.com/immutable
Questions and answers
What is Immutable?
Immutable is a gaming technology company; its Immutable Chain (Immutable zkEVM) is an EVM-compatible chain for games with IMX as gas.
What is the maximum supply of IMX?
2,000,000,000 IMX, according to the 2023 Immutable whitepaper.
What happened to Immutable X?
Immutable X, the StarkEx-based rollup, was merged into Immutable Chain in early 2026 and its assets were migrated.
What is IMX used for?
IMX pays gas on Immutable Chain, can be staked, and is used to vote on ecosystem proposals.
How is Immutable Chain secured?
Its nodes run Clique proof-of-authority consensus, and the Ethereum bridge uses Axelar messaging with flow-rate limits.
Sources
- Immutable — Home
- Immutable — Chain
- Immutable Docs — Immutable Chain overview
- Immutable Docs — Native token
- Immutable Docs — Immutable X deprecation
- Immutable Docs — Differences from Ethereum
- Immutable Docs — Bridging
- Immutable Docs — Running nodes
- IMX token site — Overview
- IMX token site — Tokenomics
- Immutable Whitepaper Update 2023 (PDF)
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