<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3/A</documentType>

    <periodOfReport>2013-02-08</periodOfReport>

    <dateOfOriginalSubmission>2013-04-17</dateOfOriginalSubmission>

    <noSecuritiesOwned>0</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000789570</issuerCik>
        <issuerName>MGM Resorts International</issuerName>
        <issuerTradingSymbol>MGM</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001574607</rptOwnerCik>
            <rptOwnerName>GROUNDS WILLIAM WARWICK</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>3600 LAS VEGAS BLVD. SOUTH</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LAS VEGAS</rptOwnerCity>
            <rptOwnerState>NV</rptOwnerState>
            <rptOwnerZipCode>89109</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001410401</rptOwnerCik>
            <rptOwnerName>Dubai World</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>EMIRATES TOWERS, LEVEL 47, SHEIKH</rptOwnerStreet1>
            <rptOwnerStreet2>ZAYED ROAD</rptOwnerStreet2>
            <rptOwnerCity>DUBAI</rptOwnerCity>
            <rptOwnerState>C0</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED ARAB EMIRATES</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001716612</rptOwnerCik>
            <rptOwnerName>Infinity World Holding Ltd.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>EMIRATES TOWERS, LEVEL 47,</rptOwnerStreet1>
            <rptOwnerStreet2>SHEIKH ZAYED ROAD</rptOwnerStreet2>
            <rptOwnerCity>DUBAI</rptOwnerCity>
            <rptOwnerState>C0</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED ARAB EMIRATES</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001716611</rptOwnerCik>
            <rptOwnerName>Infinity World Cayman Investments Corp</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>EMIRATES TOWERS, LEVEL 47,</rptOwnerStreet1>
            <rptOwnerStreet2>SHEIKH ZAYED ROAD</rptOwnerStreet2>
            <rptOwnerCity>DUBAI</rptOwnerCity>
            <rptOwnerState>C0</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED ARAB EMIRATES</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001716610</rptOwnerCik>
            <rptOwnerName>Infinity World (Cayman) L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>EMIRATES TOWERS, LEVEL 47,</rptOwnerStreet1>
            <rptOwnerStreet2>SHEIKH ZAYED ROAD</rptOwnerStreet2>
            <rptOwnerCity>DUBAI</rptOwnerCity>
            <rptOwnerState>C0</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED ARAB EMIRATES</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001716609</rptOwnerCik>
            <rptOwnerName>Infinity World (Cayman) Holding</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>EMIRATES TOWERS, LEVEL 47,</rptOwnerStreet1>
            <rptOwnerStreet2>SHEIKH ZAYED ROAD</rptOwnerStreet2>
            <rptOwnerCity>DUBAI</rptOwnerCity>
            <rptOwnerState>C0</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED ARAB EMIRATES</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001716613</rptOwnerCik>
            <rptOwnerName>Infinity World Investments LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>EMIRATES TOWERS, LEVEL 47,</rptOwnerStreet1>
            <rptOwnerStreet2>SHEIKH ZAYED ROAD</rptOwnerStreet2>
            <rptOwnerCity>DUBAI</rptOwnerCity>
            <rptOwnerState>C0</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>UNITED ARAB EMIRATES</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>1</isOther>
            <otherText>See Remarks</otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>11500000</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14548738</value>
                    <footnoteId id="F2"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                    <footnoteId id="F2"/>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Infinity World Investments LLC, a Nevada limited liability company (&quot;Infinity World&quot;), is a direct wholly-owned subsidiary of Infinity World Cayman Investments Corporation, a Cayman Islands exempted company (&quot;Cayman Investments&quot;).  Cayman Investments is a direct wholly-owned subsidiary of Infinity World (Cayman) L.P., a Cayman Islands exempted limited partnership (&quot;Cayman LP&quot;), for which Infinity World (Cayman) Holding, a Cayman Islands exempted company (&quot;Cayman Holding&quot;), is general partner.  Cayman Holding is a direct wholly-owned subsidiary of Infinity World Holding Ltd., a Dubai, United Arab Emirates offshore corporation (&quot;Infinity Holding&quot;) and a wholly-owned subsidiary of Dubai World.  Dubai World is a decree entity of Dubai, United Arab Emirates government and 100% owned by the Government of Dubai (&quot;DW&quot;).</footnote>
        <footnote id="F2">Infinity World is a direct beneficial owner of 14,548,738 shares. Cayman LP is a direct beneficial owner of 11,500,000 shares. Cayman LP and Cayman Investments are each indirect beneficial owners of the 14,548,738 shares directly beneficially owned by Infinity World. DW, Infinity Holding and Cayman Holding are each indirect beneficial owners of  the aggregate 26,048,738 shares directly beneficially owned by Infinity World and Cayman LP. Each of Infinity World, Cayman Investments, Cayman LP, Cayman Holding, Infinity Holding and DW (collectively, the &quot;Dubai Entities&quot;) disclaim beneficial ownership of these securities except to the extent of that person's pecuniary interest therein. Mr. Grounds does not beneficially own shares of the Issuer's Common Stock and disclaims beneficial ownership of the shares beneficially owned by the Dubai Entities.</footnote>
    </footnotes>

    <remarks>William W. Grounds is a director of the Issuer who was designated as a nominee for election to serve on the Issuer's board of directors pursuant to the that certain company stock purchase and support agreement, dated as of August, 21, 2007, by and between the Issuer and Infinity World Investments LLC. As a result, the following persons may be deemed directors by deputization of the Issuer solely for purposes of Section 16 of the Securities Exchange Act of 1934, as amended: Infinity World Investments LLC, Infinity World Cayman Investments Corporation, Infinity World (Cayman) L.P., Infinity World (Cayman) Holding, Infinity World Holding Ltd., and Dubai World. This amendment to Form 3 is being filed solely to include additional reporting persons. This amendment does not otherwise update the information originally reported on April 17, 2013.</remarks>

    <ownerSignature>
        <signatureName>William Warwick Grounds, By: /s/ William Warwick Grounds</signatureName>
        <signatureDate>2017-09-11</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Dubai World, By: /s/ Hamad Buamim, Managing Director</signatureName>
        <signatureDate>2017-09-11</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Infinity World Holding Ltd., By:  /s/ Hamad Buamim, Director</signatureName>
        <signatureDate>2017-09-11</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Infinity World Cayman Investments Corporation, By:  /s/ Hamad Buamim, Director</signatureName>
        <signatureDate>2017-09-11</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Infinity World (Cayman) L.P., By: Infinity World (Cayman) Holding, its General Partner, By:  /s/ Hamad Buamim, Director</signatureName>
        <signatureDate>2017-09-11</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Infinity World (Cayman) Holding, By:  /s/ Hamad Buamim, Director</signatureName>
        <signatureDate>2017-09-11</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>Infinity World Investments LLC, By:  /s/ Hamad Buamim, Director</signatureName>
        <signatureDate>2017-09-11</signatureDate>
    </ownerSignature>
</ownershipDocument>
