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

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-04-29</periodOfReport>

    <notSubjectToSection16>1</notSubjectToSection16>

    <issuer>
        <issuerCik>0001366246</issuerCik>
        <issuerName>GLU MOBILE INC</issuerName>
        <issuerTradingSymbol>GLUU</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001293451</rptOwnerCik>
            <rptOwnerName>Tencent Holdings Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>LEVEL 29, THREE PACIFIC PLACE</rptOwnerStreet1>
            <rptOwnerStreet2>1 QUEEN'S ROAD EAST</rptOwnerStreet2>
            <rptOwnerCity>WANCHAI</rptOwnerCity>
            <rptOwnerState>K3</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>HONG KONG</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001641732</rptOwnerCik>
            <rptOwnerName>Red River Investment Ltd</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>LEVEL 29, THREE PACIFIC PLACE</rptOwnerStreet1>
            <rptOwnerStreet2>1 QUEEN'S ROAD EAST</rptOwnerStreet2>
            <rptOwnerCity>WANCHAI</rptOwnerCity>
            <rptOwnerState>K3</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription>HONG KONG</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock, par value $0.0001 per share</value>
            </securityTitle>
            <transactionDate>
                <value>2021-04-29</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>21000000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>See footnote</value>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On February 8, 2021, the Issuer entered into the Agreement and Plan of Merger (the &quot;Merger Agreement&quot;), with Electronic Arts Inc. (&quot;Electronic Arts&quot;), a Delaware corporation, and Giants Acquisition Sub, Inc., a Delaware corporation and wholly owned subsidiary of Electronic Arts, and the Issuer. Upon the closing (the &quot;Closing&quot;) of the transactions (the &quot;Merger&quot;) contemplated by the Merger Agreement on April 29, 2021, each share of the Issuer's common stock (a &quot;Share&quot;) was cancelled and converted into the right to receive an amount in cash, without interest, equal to $12.50 (the &quot;Per Share Merger Consideration&quot;)</footnote>
        <footnote id="F2">Held directly by Red River Investment Limited (&quot;Red River&quot;). Red River is a wholly-owned subsidiary of Tencent.</footnote>
    </footnotes>

    <remarks>Ben Feder, President, International Partnerships (North America) of Tencent Holdings Limited, serves as the representative of the Reporting Persons on the Issuer's board of directors.</remarks>

    <ownerSignature>
        <signatureName>For and on behalf of Tencent Holdings Limited, By: /s/ Martin Lau, Name: Martin Lau, Title: Authorized Signatory</signatureName>
        <signatureDate>2021-05-07</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>For and on behalf of Red River Investment Limited, By: /s/ Li Qingjie, Name: Li Qingjie, Title: Director</signatureName>
        <signatureDate>2021-05-07</signatureDate>
    </ownerSignature>
</ownershipDocument>
