-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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MIC-Info: RSA-MD5,RSA,
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 A28rnn3uCAZHwCj3CEx94A==

<SEC-DOCUMENT>0001140361-07-013600.txt : 20070705
<SEC-HEADER>0001140361-07-013600.hdr.sgml : 20070704
<ACCEPTANCE-DATETIME>20070705115508
ACCESSION NUMBER:		0001140361-07-013600
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20070703
FILED AS OF DATE:		20070705
DATE AS OF CHANGE:		20070705

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CENTURY CASINOS INC /CO/
		CENTRAL INDEX KEY:			0000911147
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-MISCELLANEOUS AMUSEMENT & RECREATION [7990]
		IRS NUMBER:				841271317
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1263 A LAKE PLAZA DR.
		CITY:			COLORADO SPRINGS
		STATE:			CO
		ZIP:			80906
		BUSINESS PHONE:		719-527-8300

	MAIL ADDRESS:	
		STREET 1:		1263 A LAKE PLAZA DR.
		CITY:			COLORADO SPRINGS
		STATE:			CO
		ZIP:			80906

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	CENTURY CASINOS INC
		DATE OF NAME CHANGE:	19940802

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALPINE GAMING INC
		DATE OF NAME CHANGE:	19930824

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			SCHELLMANN GOTTFRIED
		CENTRAL INDEX KEY:			0001211065

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-22900
		FILM NUMBER:		07963709

	BUSINESS ADDRESS:	
		BUSINESS PHONE:		01143223624540

	MAIL ADDRESS:	
		STREET 1:		RIEMERSCHMIDG 30
		CITY:			MARIA ENZERSDORF AUSTRIA
		STATE:			C4
		ZIP:			02340
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc1.xml
<DESCRIPTION>FORM 4
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2007-07-03</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000911147</issuerCik>
        <issuerName>CENTURY CASINOS INC /CO/</issuerName>
        <issuerTradingSymbol>CNTY</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001211065</rptOwnerCik>
            <rptOwnerName>SCHELLMANN GOTTFRIED</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>RIEMERSCHMIDG 30</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>MARIA ENZERSDORF</rptOwnerCity>
            <rptOwnerState>C4</rptOwnerState>
            <rptOwnerZipCode>A-02340</rptOwnerZipCode>
            <rptOwnerStateDescription>AUSTRIA</rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle></officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>81200</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Common Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>9.00</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2007-07-03</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>7500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <value>2008-07-03</value>
            </exerciseDate>
            <expirationDate>
                <value>2017-07-02</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>7500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>7500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeHolding>
            <securityTitle>
                <value>Common Stock Options</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>3.26</value>
            </conversionOrExercisePrice>
            <exerciseDate>
                <value>2005-01-18</value>
                <footnoteId id="F1"/>
            </exerciseDate>
            <expirationDate>
                <value>2009-01-18</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>14000</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>14000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeHolding>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">6,000 options vest on Jan 18, 2007 with the remainder vesting one year from this date</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Gottfried Schellmann</signatureName>
        <signatureDate>2007-07-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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