diff --git a/packages/contracts-bedrock/interfaces/dispute/IDisputeGame.sol b/packages/contracts-bedrock/interfaces/dispute/IDisputeGame.sol
index 85bb61606dea7..cae5a8fc9244e 100644
--- a/packages/contracts-bedrock/interfaces/dispute/IDisputeGame.sol
+++ b/packages/contracts-bedrock/interfaces/dispute/IDisputeGame.sol
@@ -13,6 +13,7 @@ interface IDisputeGame is IInitializable {
     function gameType() external view returns (GameType gameType_);
     function gameCreator() external pure returns (address creator_);
     function rootClaim() external pure returns (Claim rootClaim_);
+    function rootClaimByChainId(uint256 _chainId) external pure returns (Claim rootClaim_);
     function l1Head() external pure returns (Hash l1Head_);
     function l2SequenceNumber() external pure returns (uint256 l2SequenceNumber_);
     function extraData() external pure returns (bytes memory extraData_);
diff --git a/packages/contracts-bedrock/interfaces/dispute/IFaultDisputeGame.sol b/packages/contracts-bedrock/interfaces/dispute/IFaultDisputeGame.sol
index 86ace4d527077..cba277a4a26a6 100644
--- a/packages/contracts-bedrock/interfaces/dispute/IFaultDisputeGame.sol
+++ b/packages/contracts-bedrock/interfaces/dispute/IFaultDisputeGame.sol
@@ -74,6 +74,7 @@ interface IFaultDisputeGame is IDisputeGame {
     error UnexpectedList();
     error UnexpectedRootClaim(Claim rootClaim);
     error UnexpectedString();
+    error UnknownChainId();
     error ValidStep();
     error InvalidBondDistributionMode();
     error GameNotFinalized();
@@ -121,6 +122,7 @@ interface IFaultDisputeGame is IDisputeGame {
     function move(Claim _disputed, uint256 _challengeIndex, Claim _claim, bool _isAttack) external payable;
     function normalModeCredit(address) external view returns (uint256);
     function refundModeCredit(address) external view returns (uint256);
+    function rootClaimByChainId(uint256 _chainId) external pure returns (Claim rootClaim_);
     function resolutionCheckpoints(uint256)
         external
         view
diff --git a/packages/contracts-bedrock/interfaces/dispute/IPermissionedDisputeGame.sol b/packages/contracts-bedrock/interfaces/dispute/IPermissionedDisputeGame.sol
index 788c65790c030..92dc3ddeeec8d 100644
--- a/packages/contracts-bedrock/interfaces/dispute/IPermissionedDisputeGame.sol
+++ b/packages/contracts-bedrock/interfaces/dispute/IPermissionedDisputeGame.sol
@@ -63,6 +63,7 @@ interface IPermissionedDisputeGame is IDisputeGame {
     error UnexpectedList();
     error UnexpectedRootClaim(Claim rootClaim);
     error UnexpectedString();
+    error UnknownChainId();
     error ValidStep();
     error InvalidBondDistributionMode();
     error GameNotFinalized();
@@ -111,6 +112,7 @@ interface IPermissionedDisputeGame is IDisputeGame {
     function move(Claim _disputed, uint256 _challengeIndex, Claim _claim, bool _isAttack) external payable;
     function normalModeCredit(address) external view returns (uint256);
     function refundModeCredit(address) external view returns (uint256);
+    function rootClaimByChainId(uint256 _chainId) external pure returns (Claim rootClaim_);
     function resolutionCheckpoints(uint256)
         external
         view
diff --git a/packages/contracts-bedrock/interfaces/dispute/ISuperFaultDisputeGame.sol b/packages/contracts-bedrock/interfaces/dispute/ISuperFaultDisputeGame.sol
index 40f7b0e87cabd..314d1b1656e9b 100644
--- a/packages/contracts-bedrock/interfaces/dispute/ISuperFaultDisputeGame.sol
+++ b/packages/contracts-bedrock/interfaces/dispute/ISuperFaultDisputeGame.sol
@@ -105,6 +105,7 @@ interface ISuperFaultDisputeGame is IDisputeGame {
     function normalModeCredit(address) external view returns (uint256);
     function l2SequenceNumber() external pure returns (uint256 l2SequenceNumber_);
     function refundModeCredit(address) external view returns (uint256);
+    function rootClaimByChainId(uint256 _chainId) external pure returns (Claim outputRootClaim_);
     function resolutionCheckpoints(uint256)
         external
         view
@@ -121,8 +122,6 @@ interface ISuperFaultDisputeGame is IDisputeGame {
     function vm() external view returns (IBigStepper vm_);
     function wasRespectedGameTypeWhenCreated() external view returns (bool);
     function weth() external view returns (IDelayedWETH weth_);
-    // TODO(#18516): Remove once IDisputeGame includes this interface
-    function rootClaimByChainId(uint256 _chainId) external view returns (Claim outputRootClaim_);
 
     function __constructor__(GameConstructorParams memory _params) external;
 }
diff --git a/packages/contracts-bedrock/interfaces/dispute/ISuperPermissionedDisputeGame.sol b/packages/contracts-bedrock/interfaces/dispute/ISuperPermissionedDisputeGame.sol
index 06e9d2cbd2519..1af339e77c17b 100644
--- a/packages/contracts-bedrock/interfaces/dispute/ISuperPermissionedDisputeGame.sol
+++ b/packages/contracts-bedrock/interfaces/dispute/ISuperPermissionedDisputeGame.sol
@@ -103,6 +103,7 @@ interface ISuperPermissionedDisputeGame is IDisputeGame {
     function normalModeCredit(address) external view returns (uint256);
     function l2SequenceNumber() external pure returns (uint256 l2SequenceNumber_);
     function refundModeCredit(address) external view returns (uint256);
+    function rootClaimByChainId(uint256 _chainId) external pure returns (Claim outputRootClaim_);
     function resolutionCheckpoints(uint256)
         external
         view
@@ -119,8 +120,6 @@ interface ISuperPermissionedDisputeGame is IDisputeGame {
     function vm() external view returns (IBigStepper vm_);
     function wasRespectedGameTypeWhenCreated() external view returns (bool);
     function weth() external view returns (IDelayedWETH weth_);
-    // TODO(#18516): Remove once IDisputeGame includes this interface
-    function rootClaimByChainId(uint256 _chainId) external view returns (Claim outputRootClaim_);
 
     function __constructor__(ISuperFaultDisputeGame.GameConstructorParams memory _params) external;
 }
diff --git a/packages/contracts-bedrock/interfaces/dispute/v2/IFaultDisputeGameV2.sol b/packages/contracts-bedrock/interfaces/dispute/v2/IFaultDisputeGameV2.sol
index 3b31babbbabf1..35d896a1cb275 100644
--- a/packages/contracts-bedrock/interfaces/dispute/v2/IFaultDisputeGameV2.sol
+++ b/packages/contracts-bedrock/interfaces/dispute/v2/IFaultDisputeGameV2.sol
@@ -68,6 +68,7 @@ interface IFaultDisputeGameV2 is IDisputeGame {
     error UnexpectedList();
     error UnexpectedRootClaim(Claim rootClaim);
     error UnexpectedString();
+    error UnknownChainId();
     error ValidStep();
     error InvalidBondDistributionMode();
     error GameNotFinalized();
@@ -114,6 +115,7 @@ interface IFaultDisputeGameV2 is IDisputeGame {
     function move(Claim _disputed, uint256 _challengeIndex, Claim _claim, bool _isAttack) external payable;
     function normalModeCredit(address) external view returns (uint256);
     function refundModeCredit(address) external view returns (uint256);
+    function rootClaimByChainId(uint256 _chainId) external pure returns (Claim rootClaim_);
     function resolutionCheckpoints(uint256)
         external
         view
diff --git a/packages/contracts-bedrock/interfaces/dispute/v2/IPermissionedDisputeGameV2.sol b/packages/contracts-bedrock/interfaces/dispute/v2/IPermissionedDisputeGameV2.sol
index 7db5da9e2f7fa..52419eea9d3a0 100644
--- a/packages/contracts-bedrock/interfaces/dispute/v2/IPermissionedDisputeGameV2.sol
+++ b/packages/contracts-bedrock/interfaces/dispute/v2/IPermissionedDisputeGameV2.sol
@@ -63,6 +63,7 @@ interface IPermissionedDisputeGameV2 is IDisputeGame {
     error UnexpectedList();
     error UnexpectedRootClaim(Claim rootClaim);
     error UnexpectedString();
+    error UnknownChainId();
     error ValidStep();
     error InvalidBondDistributionMode();
     error GameNotFinalized();
@@ -110,6 +111,7 @@ interface IPermissionedDisputeGameV2 is IDisputeGame {
     function move(Claim _disputed, uint256 _challengeIndex, Claim _claim, bool _isAttack) external payable;
     function normalModeCredit(address) external view returns (uint256);
     function refundModeCredit(address) external view returns (uint256);
+    function rootClaimByChainId(uint256 _chainId) external pure returns (Claim rootClaim_);
     function resolutionCheckpoints(uint256)
         external
         view
diff --git a/packages/contracts-bedrock/interfaces/dispute/zk/IOptimisticZkGame.sol b/packages/contracts-bedrock/interfaces/dispute/zk/IOptimisticZkGame.sol
index 748ccb066420c..8ff83c79c8ced 100644
--- a/packages/contracts-bedrock/interfaces/dispute/zk/IOptimisticZkGame.sol
+++ b/packages/contracts-bedrock/interfaces/dispute/zk/IOptimisticZkGame.sol
@@ -72,6 +72,7 @@ interface IOptimisticZkGame is IDisputeGame, ISemver {
     function gameType() external view returns (GameType gameType_);
     function gameCreator() external pure returns (address creator_);
     function rootClaim() external pure returns (Claim rootClaim_);
+    function rootClaimByChainId(uint256) external pure returns (Claim rootClaim_);
     function l1Head() external pure returns (Hash l1Head_);
     function extraData() external pure returns (bytes memory extraData_);
     function gameData() external view returns (GameType gameType_, Claim rootClaim_, bytes memory extraData_);
diff --git a/packages/contracts-bedrock/snapshots/abi/FaultDisputeGame.json b/packages/contracts-bedrock/snapshots/abi/FaultDisputeGame.json
index 26a1351d53d79..57107a1de6fbd 100644
--- a/packages/contracts-bedrock/snapshots/abi/FaultDisputeGame.json
+++ b/packages/contracts-bedrock/snapshots/abi/FaultDisputeGame.json
@@ -781,6 +781,25 @@
     "stateMutability": "pure",
     "type": "function"
   },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "_chainId",
+        "type": "uint256"
+      }
+    ],
+    "name": "rootClaimByChainId",
+    "outputs": [
+      {
+        "internalType": "Claim",
+        "name": "rootClaim_",
+        "type": "bytes32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
   {
     "inputs": [],
     "name": "splitDepth",
@@ -1212,6 +1231,11 @@
     "name": "UnexpectedString",
     "type": "error"
   },
+  {
+    "inputs": [],
+    "name": "UnknownChainId",
+    "type": "error"
+  },
   {
     "inputs": [],
     "name": "ValidStep",
diff --git a/packages/contracts-bedrock/snapshots/abi/FaultDisputeGameV2.json b/packages/contracts-bedrock/snapshots/abi/FaultDisputeGameV2.json
index c3c9a6555f2a8..92cc0f80814e5 100644
--- a/packages/contracts-bedrock/snapshots/abi/FaultDisputeGameV2.json
+++ b/packages/contracts-bedrock/snapshots/abi/FaultDisputeGameV2.json
@@ -751,6 +751,25 @@
     "stateMutability": "pure",
     "type": "function"
   },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "_chainId",
+        "type": "uint256"
+      }
+    ],
+    "name": "rootClaimByChainId",
+    "outputs": [
+      {
+        "internalType": "Claim",
+        "name": "rootClaim_",
+        "type": "bytes32"
+      }
+    ],
+    "stateMutability": "pure",
+    "type": "function"
+  },
   {
     "inputs": [],
     "name": "splitDepth",
@@ -1177,6 +1196,11 @@
     "name": "UnexpectedString",
     "type": "error"
   },
+  {
+    "inputs": [],
+    "name": "UnknownChainId",
+    "type": "error"
+  },
   {
     "inputs": [],
     "name": "ValidStep",
diff --git a/packages/contracts-bedrock/snapshots/abi/OptimisticZkGame.json b/packages/contracts-bedrock/snapshots/abi/OptimisticZkGame.json
index 0109d574c03d2..5dc919132786b 100644
--- a/packages/contracts-bedrock/snapshots/abi/OptimisticZkGame.json
+++ b/packages/contracts-bedrock/snapshots/abi/OptimisticZkGame.json
@@ -505,6 +505,25 @@
     "stateMutability": "pure",
     "type": "function"
   },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "",
+        "type": "uint256"
+      }
+    ],
+    "name": "rootClaimByChainId",
+    "outputs": [
+      {
+        "internalType": "Claim",
+        "name": "rootClaim_",
+        "type": "bytes32"
+      }
+    ],
+    "stateMutability": "pure",
+    "type": "function"
+  },
   {
     "inputs": [],
     "name": "sp1Verifier",
diff --git a/packages/contracts-bedrock/snapshots/abi/PermissionedDisputeGame.json b/packages/contracts-bedrock/snapshots/abi/PermissionedDisputeGame.json
index 8bb88f4663986..f9718eac61dcd 100644
--- a/packages/contracts-bedrock/snapshots/abi/PermissionedDisputeGame.json
+++ b/packages/contracts-bedrock/snapshots/abi/PermissionedDisputeGame.json
@@ -817,6 +817,25 @@
     "stateMutability": "pure",
     "type": "function"
   },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "_chainId",
+        "type": "uint256"
+      }
+    ],
+    "name": "rootClaimByChainId",
+    "outputs": [
+      {
+        "internalType": "Claim",
+        "name": "rootClaim_",
+        "type": "bytes32"
+      }
+    ],
+    "stateMutability": "view",
+    "type": "function"
+  },
   {
     "inputs": [],
     "name": "splitDepth",
@@ -1253,6 +1272,11 @@
     "name": "UnexpectedString",
     "type": "error"
   },
+  {
+    "inputs": [],
+    "name": "UnknownChainId",
+    "type": "error"
+  },
   {
     "inputs": [],
     "name": "ValidStep",
diff --git a/packages/contracts-bedrock/snapshots/abi/PermissionedDisputeGameV2.json b/packages/contracts-bedrock/snapshots/abi/PermissionedDisputeGameV2.json
index 09352c2b75827..fb9900ca2d400 100644
--- a/packages/contracts-bedrock/snapshots/abi/PermissionedDisputeGameV2.json
+++ b/packages/contracts-bedrock/snapshots/abi/PermissionedDisputeGameV2.json
@@ -777,6 +777,25 @@
     "stateMutability": "pure",
     "type": "function"
   },
+  {
+    "inputs": [
+      {
+        "internalType": "uint256",
+        "name": "_chainId",
+        "type": "uint256"
+      }
+    ],
+    "name": "rootClaimByChainId",
+    "outputs": [
+      {
+        "internalType": "Claim",
+        "name": "rootClaim_",
+        "type": "bytes32"
+      }
+    ],
+    "stateMutability": "pure",
+    "type": "function"
+  },
   {
     "inputs": [],
     "name": "splitDepth",
@@ -1208,6 +1227,11 @@
     "name": "UnexpectedString",
     "type": "error"
   },
+  {
+    "inputs": [],
+    "name": "UnknownChainId",
+    "type": "error"
+  },
   {
     "inputs": [],
     "name": "ValidStep",
diff --git a/packages/contracts-bedrock/snapshots/semver-lock.json b/packages/contracts-bedrock/snapshots/semver-lock.json
index dc38b2a02055f..fa3d1ac3b6e0d 100644
--- a/packages/contracts-bedrock/snapshots/semver-lock.json
+++ b/packages/contracts-bedrock/snapshots/semver-lock.json
@@ -196,12 +196,12 @@
     "sourceCodeHash": "0xf19216b7943479af87a01ab8935e68561853e8e333d09719c917228bc7a01a3a"
   },
   "src/dispute/FaultDisputeGame.sol:FaultDisputeGame": {
-    "initCodeHash": "0xe7d3c982532946d196d7efadb9e2576c76b8f9e0d1f885ac36977d6f3fb72a65",
-    "sourceCodeHash": "0x63222e6926c8dd050d1adc0e65039c42382f269c3b0e113751d79e7a5167b7ac"
+    "initCodeHash": "0x57b01ba6873a49b3adafe58d05e0e0c4f342281181682f9f7ecd30752395b4ad",
+    "sourceCodeHash": "0x04111af652e4a059b591da704a7d7a15dcb46a75be05fd7cad6b88c1b7a1ac1b"
   },
   "src/dispute/PermissionedDisputeGame.sol:PermissionedDisputeGame": {
-    "initCodeHash": "0xefa478f976e55eb53fcccf653b202bc2532781230f20013450ce0845b77d815c",
-    "sourceCodeHash": "0x335a503a4cc02dd30d88d163393680f3fd89168e0faa4fa4b0ae5da399656f91"
+    "initCodeHash": "0xcd7a262ac008a2de347e459902ca7039c1c980eb312106b9cc2c1f3190ae0840",
+    "sourceCodeHash": "0x618013c7ad9742f59445f355f7b26347ee1727c9e6616218a6f3443f1b4bb8e0"
   },
   "src/dispute/SuperFaultDisputeGame.sol:SuperFaultDisputeGame": {
     "initCodeHash": "0xb5ce71bc56109055cd0dc71fc63015443bbdb29c5975e049802cd1b5188f06ca",
@@ -212,16 +212,16 @@
     "sourceCodeHash": "0x314b6e0412f698ce3531e8176ce8e5b8a3976cc3fa9d7ecb1f3278612f90ed4e"
   },
   "src/dispute/v2/FaultDisputeGameV2.sol:FaultDisputeGameV2": {
-    "initCodeHash": "0x6fc59e2da083c9e2093e42b0fda705e8215cc216e4dcedbf728c08f69ec2d3bd",
-    "sourceCodeHash": "0x7fc97734c12e207f011c4f079fffe84f5bd11f4fb4a95dd56ad6a69df184584f"
+    "initCodeHash": "0x2806f9c9f0babb80be2a0c40382d265d598632dc6c1902db7f5f8f214d233f2f",
+    "sourceCodeHash": "0x1ac7a6aa4adafe2058046f06a425c662369f756a89be956b5a222647d99fabe8"
   },
   "src/dispute/v2/PermissionedDisputeGameV2.sol:PermissionedDisputeGameV2": {
-    "initCodeHash": "0x9896fd04e9a3f9fe4f1d6e93eb298b37a6bfa33424aa705e68cc58d0ba7f3f90",
-    "sourceCodeHash": "0xc0ff6e93b6e2b9111c11e81b5df8948ab71d02b9d2c4dfda982fcb615519f1f7"
+    "initCodeHash": "0xfbb451f1a0bf22bb96242db527371dd0b0c3435208f9e074441ec0aacbf414bd",
+    "sourceCodeHash": "0x92bb886203246108435408762fab6e56fe223c2ed5ae85b5b792653cead4ec7a"
   },
   "src/dispute/zk/OptimisticZkGame.sol:OptimisticZkGame": {
-    "initCodeHash": "0x0e905fc81f45b1e9aa786e66bfe70b3ec4abd8d550be5d4c8f43cdad6f2618b2",
-    "sourceCodeHash": "0x162408c90e8d9d8afd982e9825db093eba5c387cbe1145c1a9b86e2361547138"
+    "initCodeHash": "0x6eff352a513e3ce2ac5c53e4094985bf2ae1acad3992d73d6564c95aca3aebf1",
+    "sourceCodeHash": "0x998796b0286830629cd50eeb003eec571680cd171f4ad80bd5cad53aca756909"
   },
   "src/legacy/DeployerWhitelist.sol:DeployerWhitelist": {
     "initCodeHash": "0x2e0ef4c341367eb59cc6c25190c64eff441d3fe130189da91d4d126f6bdbc9b5",
diff --git a/packages/contracts-bedrock/src/dispute/FaultDisputeGame.sol b/packages/contracts-bedrock/src/dispute/FaultDisputeGame.sol
index 8689221a03a8a..97f4e0506ec35 100644
--- a/packages/contracts-bedrock/src/dispute/FaultDisputeGame.sol
+++ b/packages/contracts-bedrock/src/dispute/FaultDisputeGame.sol
@@ -58,7 +58,8 @@ import {
     GameNotResolved,
     ReservedGameType,
     GamePaused,
-    BadExtraData
+    BadExtraData,
+    UnknownChainId
 } from "src/dispute/lib/Errors.sol";
 
 // Interfaces
@@ -172,9 +173,9 @@ contract FaultDisputeGame is Clone, ISemver {
     uint256 internal constant HEADER_BLOCK_NUMBER_INDEX = 8;
 
     /// @notice Semantic version.
-    /// @custom:semver 1.8.0
+    /// @custom:semver 1.9.0
     function version() public pure virtual returns (string memory) {
-        return "1.8.0";
+        return "1.9.0";
     }
 
     /// @notice The starting timestamp of the game
@@ -865,6 +866,14 @@ contract FaultDisputeGame is Clone, ISemver {
         rootClaim_ = Claim.wrap(_getArgBytes32(20));
     }
 
+    /// @notice Getter for the root claim for a given L2 chain ID.
+    /// @param _chainId The L2 chain ID to get the root claim for.
+    /// @return rootClaim_ The root claim of the DisputeGame.
+    function rootClaimByChainId(uint256 _chainId) public view returns (Claim rootClaim_) {
+        if (_chainId != L2_CHAIN_ID) revert UnknownChainId();
+        rootClaim_ = rootClaim();
+    }
+
     /// @notice Getter for the parent hash of the L1 block when the dispute game was created.
     /// @dev `clones-with-immutable-args` argument #3
     /// @return l1Head_ The parent hash of the L1 block when the dispute game was created.
diff --git a/packages/contracts-bedrock/src/dispute/PermissionedDisputeGame.sol b/packages/contracts-bedrock/src/dispute/PermissionedDisputeGame.sol
index f356190ccdd7e..5dc45e46a3d37 100644
--- a/packages/contracts-bedrock/src/dispute/PermissionedDisputeGame.sol
+++ b/packages/contracts-bedrock/src/dispute/PermissionedDisputeGame.sol
@@ -32,9 +32,9 @@ contract PermissionedDisputeGame is FaultDisputeGame {
     }
 
     /// @notice Semantic version.
-    /// @custom:semver 1.8.0
+    /// @custom:semver 1.9.0
     function version() public pure override returns (string memory) {
-        return "1.8.0";
+        return "1.9.0";
     }
 
     /// @param _params Parameters for creating a new FaultDisputeGame.
diff --git a/packages/contracts-bedrock/src/dispute/lib/Errors.sol b/packages/contracts-bedrock/src/dispute/lib/Errors.sol
index 5779fc3f92e26..2f5ce0dd777d5 100644
--- a/packages/contracts-bedrock/src/dispute/lib/Errors.sol
+++ b/packages/contracts-bedrock/src/dispute/lib/Errors.sol
@@ -133,6 +133,9 @@ error GameNotResolved();
 /// @notice Thrown when a reserved game type is used.
 error ReservedGameType();
 
+/// @notice Thrown when an unknown chain ID is passed to rootClaimByChainId.
+error UnknownChainId();
+
 ////////////////////////////////////////////////////////////////
 //              `PermissionedDisputeGame` Errors              //
 ////////////////////////////////////////////////////////////////
@@ -177,10 +180,3 @@ error InvalidProposalStatus();
 
 /// @notice Thrown when the game is initialized by an incorrect factory.
 error IncorrectDisputeGameFactory();
-
-////////////////////////////////////////////////////////////////
-//            `SuperFaultDisputeGame` Errors                  //
-////////////////////////////////////////////////////////////////
-
-/// @notice Thrown when an unknown chain ID is encountered.
-error UnknownChainId();
diff --git a/packages/contracts-bedrock/src/dispute/v2/FaultDisputeGameV2.sol b/packages/contracts-bedrock/src/dispute/v2/FaultDisputeGameV2.sol
index eb373b027c45f..1072a12458c76 100644
--- a/packages/contracts-bedrock/src/dispute/v2/FaultDisputeGameV2.sol
+++ b/packages/contracts-bedrock/src/dispute/v2/FaultDisputeGameV2.sol
@@ -57,7 +57,8 @@ import {
     InvalidBondDistributionMode,
     GameNotResolved,
     GamePaused,
-    BadExtraData
+    BadExtraData,
+    UnknownChainId
 } from "src/dispute/lib/Errors.sol";
 
 // Interfaces
@@ -146,9 +147,9 @@ contract FaultDisputeGameV2 is Clone, ISemver {
     uint256 internal constant HEADER_BLOCK_NUMBER_INDEX = 8;
 
     /// @notice Semantic version.
-    /// @custom:semver 2.2.0
+    /// @custom:semver 2.3.0
     function version() public pure virtual returns (string memory) {
-        return "2.2.0";
+        return "2.3.0";
     }
 
     /// @notice The starting timestamp of the game
@@ -845,6 +846,14 @@ contract FaultDisputeGameV2 is Clone, ISemver {
         rootClaim_ = Claim.wrap(_getArgBytes32(20));
     }
 
+    /// @notice Getter for the root claim for a given L2 chain ID.
+    /// @param _chainId The L2 chain ID to get the root claim for.
+    /// @return rootClaim_ The root claim of the DisputeGame.
+    function rootClaimByChainId(uint256 _chainId) public pure returns (Claim rootClaim_) {
+        if (_chainId != l2ChainId()) revert UnknownChainId();
+        rootClaim_ = rootClaim();
+    }
+
     /// @notice Getter for the parent hash of the L1 block when the dispute game was created.
     /// @dev `clones-with-immutable-args` argument #3
     /// @return l1Head_ The parent hash of the L1 block when the dispute game was created.
diff --git a/packages/contracts-bedrock/src/dispute/v2/PermissionedDisputeGameV2.sol b/packages/contracts-bedrock/src/dispute/v2/PermissionedDisputeGameV2.sol
index d0a9faa9afe2f..9f2a58ab712b4 100644
--- a/packages/contracts-bedrock/src/dispute/v2/PermissionedDisputeGameV2.sol
+++ b/packages/contracts-bedrock/src/dispute/v2/PermissionedDisputeGameV2.sol
@@ -26,9 +26,9 @@ contract PermissionedDisputeGameV2 is FaultDisputeGameV2 {
     }
 
     /// @notice Semantic version.
-    /// @custom:semver 2.2.0
+    /// @custom:semver 2.3.0
     function version() public pure override returns (string memory) {
-        return "2.2.0";
+        return "2.3.0";
     }
 
     /// @param _params Parameters for creating a new FaultDisputeGame.
diff --git a/packages/contracts-bedrock/src/dispute/zk/OptimisticZkGame.sol b/packages/contracts-bedrock/src/dispute/zk/OptimisticZkGame.sol
index ee9ab2589b108..a9c91d6f28991 100644
--- a/packages/contracts-bedrock/src/dispute/zk/OptimisticZkGame.sol
+++ b/packages/contracts-bedrock/src/dispute/zk/OptimisticZkGame.sol
@@ -146,8 +146,8 @@ contract OptimisticZkGame is Clone, ISemver, IDisputeGame {
     AccessManager internal immutable ACCESS_MANAGER;
 
     /// @notice Semantic version.
-    /// @custom:semver 0.0.1
-    string public constant version = "0.0.1";
+    /// @custom:semver 0.0.2
+    string public constant version = "0.0.2";
 
     /// @notice The starting timestamp of the game.
     Timestamp public createdAt;
@@ -592,6 +592,13 @@ contract OptimisticZkGame is Clone, ISemver, IDisputeGame {
         rootClaim_ = Claim.wrap(_getArgBytes32(0x14));
     }
 
+    /// @notice Getter for the root claim for a given L2 chain ID.
+    /// @dev For pre-interop games, returns the root claim regardless of chain ID.
+    /// @return rootClaim_ The root claim of the DisputeGame.
+    function rootClaimByChainId(uint256) public pure returns (Claim rootClaim_) {
+        rootClaim_ = rootClaim();
+    }
+
     /// @notice Getter for the parent hash of the L1 block when the dispute game was created.
     /// @dev `clones-with-immutable-args` argument #3
     /// @return l1Head_ The parent hash of the L1 block when the dispute game was created.
diff --git a/packages/contracts-bedrock/test/dispute/AnchorStateRegistry.t.sol b/packages/contracts-bedrock/test/dispute/AnchorStateRegistry.t.sol
index 2334ce904da4d..a33f69642154c 100644
--- a/packages/contracts-bedrock/test/dispute/AnchorStateRegistry.t.sol
+++ b/packages/contracts-bedrock/test/dispute/AnchorStateRegistry.t.sol
@@ -467,7 +467,7 @@ contract AnchorStateRegistry_GetStartingAnchorRoot_Test is AnchorStateRegistry_T
         // Mock the game's anchor root to be different from the starting anchor root.
         vm.mockCall(
             address(gameProxy),
-            abi.encodeCall(gameProxy.rootClaim, ()),
+            abi.encodeCall(IDisputeGame.rootClaim, ()),
             abi.encode(Claim.wrap(keccak256(abi.encode(123))))
         );
 
diff --git a/packages/contracts-bedrock/test/dispute/FaultDisputeGame.t.sol b/packages/contracts-bedrock/test/dispute/FaultDisputeGame.t.sol
index 3ad1f2a0b9e28..50599d9a950c4 100644
--- a/packages/contracts-bedrock/test/dispute/FaultDisputeGame.t.sol
+++ b/packages/contracts-bedrock/test/dispute/FaultDisputeGame.t.sol
@@ -2078,6 +2078,17 @@ contract FaultDisputeGame_RootClaim_Test is FaultDisputeGame_TestInit {
     function test_rootClaim_succeeds() public view {
         assertEq(gameProxy.rootClaim().raw(), ROOT_CLAIM.raw());
     }
+
+    /// @notice Tests that rootClaimByChainId returns the same value as rootClaim().
+    function test_rootClaimByChainId_succeeds() public view {
+        assertEq(gameProxy.rootClaimByChainId(gameProxy.l2ChainId()).raw(), gameProxy.rootClaim().raw());
+    }
+
+    /// @notice Tests that rootClaimByChainId reverts with unknown chain ID.
+    function test_rootClaimByChainId_unknownChainId_reverts() public {
+        vm.expectRevert(UnknownChainId.selector);
+        gameProxy.rootClaimByChainId(0);
+    }
 }
 
 /// @title FaultDisputeGame_ExtraData_Test
diff --git a/packages/contracts-bedrock/test/dispute/PermissionedDisputeGame.t.sol b/packages/contracts-bedrock/test/dispute/PermissionedDisputeGame.t.sol
index e5f15c3424c74..4c344d6d1a96b 100644
--- a/packages/contracts-bedrock/test/dispute/PermissionedDisputeGame.t.sol
+++ b/packages/contracts-bedrock/test/dispute/PermissionedDisputeGame.t.sol
@@ -415,3 +415,19 @@ contract PermissionedDisputeGame_Uncategorized_Test is PermissionedDisputeGame_T
         vm.stopPrank();
     }
 }
+
+/// @title PermissionedDisputeGame_RootClaimByChainId_Test
+/// @notice Tests the `rootClaimByChainId` function.
+contract PermissionedDisputeGame_RootClaimByChainId_Test is PermissionedDisputeGame_TestInit {
+    /// @notice Tests that rootClaimByChainId returns the same value as rootClaim().
+    function test_rootClaimByChainId_succeeds() public view {
+        assertEq(gameProxy.rootClaimByChainId(gameProxy.l2ChainId()).raw(), gameProxy.rootClaim().raw());
+    }
+
+    /// @notice Tests that rootClaimByChainId reverts with unknown chain ID.
+    function test_rootClaimByChainId_unknownChainId_reverts(uint256 _chainId) public {
+        vm.assume(_chainId != gameProxy.l2ChainId());
+        vm.expectRevert(UnknownChainId.selector);
+        gameProxy.rootClaimByChainId(_chainId);
+    }
+}
diff --git a/packages/contracts-bedrock/test/dispute/SuperPermissionedDisputeGame.t.sol b/packages/contracts-bedrock/test/dispute/SuperPermissionedDisputeGame.t.sol
index c3d0dd5412bc2..f3b216e82458d 100644
--- a/packages/contracts-bedrock/test/dispute/SuperPermissionedDisputeGame.t.sol
+++ b/packages/contracts-bedrock/test/dispute/SuperPermissionedDisputeGame.t.sol
@@ -372,3 +372,22 @@ contract SuperPermissionedDisputeGame_Initialize_Test is SuperPermissionedDisput
         );
     }
 }
+
+/// @title SuperPermissionedDisputeGame_RootClaimByChainId_Test
+/// @notice Tests the `rootClaimByChainId` function.
+contract SuperPermissionedDisputeGame_RootClaimByChainId_Test is SuperPermissionedDisputeGame_TestInit {
+    /// @notice Tests that the game's root claim for each output root is set correctly.
+    function test_rootClaimForOutputRoot_succeeds() public view {
+        for (uint256 i = 0; i < superRootProof.outputRoots.length; i++) {
+            uint256 chainId = superRootProof.outputRoots[i].chainId;
+            assertEq(gameProxy.rootClaimByChainId(chainId).raw(), superRootProof.outputRoots[i].root);
+        }
+    }
+
+    /// @notice Tests that requesting the root claim for an unknown chain ID reverts.
+    function test_rootClaimForOutputRoot_unknownChainId_reverts() public {
+        uint256 invalidChainId = 9999;
+        vm.expectRevert(UnknownChainId.selector);
+        gameProxy.rootClaimByChainId(invalidChainId);
+    }
+}