International Game Technology
 

Filed pursuant to Rule 424(b)(3)

Registration No. 333-103339

Prospectus Supplement No. 6

(To Prospectus Dated August 11, 2003)

$969,790,000

INTERNATIONAL GAME TECHNOLOGY
ZERO-COUPON CONVERTIBLE DEBENTURES DUE JANUARY 29, 2003 AND
COMMON STOCK ISSUABLE UPON CONVERSION OF THE DEBENTURES

This prospectus supplement amends and supplements the prospectus dated August 11, 2003, as supplemented by Prospectus Supplement No. 1 dated September 4, 2003, Prospectus Supplement No. 2 dated September 23, 2003, Prospectus Supplement No. 3 dated October 8, 2003, Prospectus Supplement No. 4 dated October 29, 2003 and Prospectus Supplement No. 5 dated November 24, 2003 relating to our Zero-Coupon Convertible Debentures due January 29, 2003 (the “Debentures”) and the shares of our common stock issuable upon conversion of the Debentures.

This prospectus supplement is incorporated by reference into, and should be read in conjunction with, the prospectus dated August 11, 2003, including any amendments or supplements to it. This prospectus supplement is not complete without, and may not be delivered or utilized except in connection with, the prospectus dated August 11, 2003, including any amendments or supplements to it.

See “Risk Factors” beginning on page 10 of the prospectus dated August 11, 2003 to read about factors you should consider before buying the Debentures.

Neither the Securities and Exchange Commission, any state securities commission, nor any gaming regulatory authority has approved or disapproved of the securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

This prospectus supplement amends and replaces the second paragraph and the table under the heading “Selling Securityholders” beginning on page 47 of the prospectus dated August 11, 2003 and page 2 of Prospectus Supplement No. 1 dated September 4, 2003, Prospectus Supplement No. 2 dated September 23, 2003, Prospectus Supplement No. 3 dated October 8, 2003, Prospectus Supplement No. 4 dated October 29, 2003 and Prospectus Supplement No. 5 dated November 24, 2003 with the information in the following paragraph and table.


The date of this prospectus supplement is December 19, 2003.


 

SELLING SECURITYHOLDERS

       The table below sets forth the name of each selling securityholder, the principal amount at maturity of Debentures, as of December 19, 2003, that each selling securityholder may offer pursuant to this prospectus and the number of shares of our Common Stock into which those Debentures are convertible. Unless set forth below, none of the selling securityholders has, or within the past three years has had, any material relationship with us or any of our predecessors or affiliates.

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)






AIG DKR SoundShore Oasis Holding Fund Ltd.
  $ 4,500,000       *       95,266       95,266        
AIG DKR SoundShore Overseas Holding Fund Ltd.
  $ 1,570,000       *       33,237       33,237        
AIG DKR SoundShore Strategic Holding Fund Ltd.
  $ 5,000,000       *       105,852       105,852        
Alexandra Global Master Fund, LTD
  $ 10,000,000       1.03 %     211,704       211,704        
AM Investment D Fund (QP) Ltd. 
  $ 825,000       *       17,465       17,465        
AM Investment E Fund Ltd. 
  $ 4,725,000       *       100,030       100,030        
Amaranth LLC
  $ 8,800,000       *       186,299       186,299        
American Fidelity Assurance Company
  $ 1,400,000       *       29,638       29,638        
Amerisure Mutual Insurance Company
  $ 555,000       *       11,749       11,749        
AOI Alternative Investments
  $ 2,000,000       *       42,340       42,340        
Arbitex Master Fund, L.P.(5)
  $ 19,900,000       2.05 %     421,290       421,290        
Asymmetric Convertible Fund(5)
  $ 2,000,000       *       42,340       42,340        
ATSF-Transamerica Convertible Securities(5)
  $ 10,000,000       1.03 %     211,704       211,704        
Aventis Pension Master Trust
  $ 350,000       *       7,409       7,409        
Bank Austria Cayman Islands, LTD
  $ 6,000,000       *       127,022       127,022        
Bear, Stearns & Co., Inc.(4)
  $ 15,000,000       1.55 %     317,556       317,556        
Bear Stearns International Limited (BSIL)(4)(5)
  $ 11,700,000       1.21 %     247,693       247,693        
BGI Global Investors c/ o Forest Investment Management L.L.C. 
  $ 1,422,000       *       30,104       30,104        
Blue Cross Blue Shield of Delaware, Inc.
  $ 330,000       *       6,986       6,986        
BNP Paribas Equity Strategies, SNC(5)
  $ 15,786,000       1.63 %     370,639       334,195       36,444  
Boilermaker-Blacksmith Pension Trust
  $ 2,000,000       *       42,340       42,340        
CALAMOS® Convertible Fund — CALAMOS® Investment Trust
  $ 37,000,000       3.82 %     783,304       783,304        
CALAMOS® Convertible Growth and Income Fund — CALAMOS Investment Trust
  $ 19,000,000       1.96 %     402,237       402,237        
CALAMOS® Convertible Portfolio — CALAMOS® Advisors Trust
  $ 225,000       *       4,763       4,763        
CALAMOS® Global Convertible Fund — CALAMOS® Investment Trust
  $ 500,000       *       10,585       10,585        
The California Wellness Foundation
  $ 575,000       *       12,172       12,172        
CareFirst BlueChoice, Inc. 
  $ 195,000       *       4,128       4,128        
CareFirst of Maryland, Inc. 
  $ 900,000       *       19,053       19,053        
CC Investments, LDC(5)
  $ 11,700,000       1.21 %     247,693       247,693        
CGNU Life Global Convertibles
  $ 2,200,000       *       46,574       46,574        
Chrysler Corporation Master Retirement Trust
  $ 6,175,000       *       130,727       130,727        
Citi JL, Ltd. 
  $ 334,000       *       7,070       7,070        
City of Albany Pension Plan
  $ 100,000       *       2,117       2,117        
City of Birmingham Retirement & Relief System
  $ 1,900,000       *       40,223       40,223        
City of Knoxville Pension System
  $ 425,000       *       8,997       8,997        
The Cockrell Foundation
  $ 200,000       *       4,234       4,234        
Coda Capital Management, LLC
  $ 4,000,000       *       84,681       84,681        

2


 

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)






Commercial Union Life Global Convertibles
  $ 3,000,000       *       63,511       63,511        
Common Fund Event Driven Company, Ltd. c/o Levco(5)
  $ 250,000       *       5,292       5,292        
CooperNeff Convertible Strategies (Cayman) Master Fund, L.P. 
  $ 10,801,000       1.11 %     228,661       228,661        
Credit Suisse First Boston LLC(4)(5)
  $ 3,000,000       *       63,511       63,511        
DBAG London(5)
  $ 3,500,000       *       74,096       74,096        
D.E. Shaw Investment Group, L.P.(5)
  $ 3,800,000       *       80,447       80,447        
D.E. Shaw Valence Portfolios, L.P.(5)
  $ 15,000,000       1.55 %     317,556       317,556        
Deephaven Domestic Convertible Trading Ltd. 
  $ 4,930,000       *       104,370       104,370        
Delta Air Lines Master Trust — CV
  $ 2,185,000       *       46,257       46,257        
Delta Airlines Master Trust
  $ 2,000,000       *       42,340       42,340        
Delta Pilots Disability & Survivorship Trust — CV
  $ 1,055,000       *       22,334       22,334        
Delta Pilots Disability & Survivorship Trust
  $ 600,000       *       12,702       12,702        
Dorinco Reinsurance Company
  $ 1,100,000       *       23,287       23,287        
The Dow Chemical Employees’ Retirement Plan
  $ 3,800,000       *       80,447       80,447        
The Fondren Foundation
  $ 260,000       *       5,504       5,504        
Forest Fulcrum Fund L.L.P.(4)
  $ 4,086,000       *       86,502       86,502        
Forest Global Convertible Fund Series A-5
  $ 16,576,000       1.71 %     350,920       350,920        
Forest Multi-Strategy Master Fund SPG, on behalf of Series F, Multi-Strategy Segregated Portfolio
  $ 2,046,000       *       43,314       43,314        
FreeState Health Plan, Inc. 
  $ 80,000       *       1,693       1,693        
Gaia Offshore Master Fund Ltd.
  $ 24,200,000       2.50 %     512,323       512,323        
Gasner Investors Holdings Ltd.
  $ 3,250,000       *       68,803       68,803        
Genesee County Employees’ Retirement System
  $ 1,000,000       *       21,170       21,170        
GLG Market Neutral Fund
  $ 33,800,000       3.49 %     715,559       715,559        
Goldman, Sachs & Co.(4)(8)
  $ 5,590,000       *       325,054       118,342       206,712  
Greek Catholic Union of the USA
  $ 150,000       *       3,175       3,175        
Group Hospitalization and Medical Services, Inc.
  $ 1,000,000       *       21,170       21,170        
Guggenheim Portfolio Co. XV, LLC
  $ 1,500,000       *       31,755       31,755        
Hamilton Multi-Strategy Master Fund L.P.
  $ 16,300,000       1.68 %     345,077       345,077        
HealthNow New York, Inc.
  $ 400,000       *       8,468       8,468        
HFR CA Select Fund
  $ 1,400,000       *       29,638       29,638        
Highbridge International LLC
  $ 38,800,000       4.00 %     821,411       821,411        
HSBC Trustee, Zola Managed Trust
  $ 500,000       *       10,585       10,585        
IDEX — Transamerica Convertible Securities Fund(5)
  $ 1,900,000       *       40,223       40,223        
Jackson County Employees’ Retirement System
  $ 450,000       *       9,526       9,526        
JC Penney Insurance Co. Group(5)
  $ 1,600,000       *       33,872       33,872        
JP Morgan Securities Inc.(4)
  $ 21,165,000       2.18 %     448,071       448,071        
KBC Financial Products [Cayman Islands] Ltd. 
  $ 9,000,000       *       190,533       190,533        
KBC Financial Products USA Inc.(4)
  $ 3,270,000       *       69,227       69,227        
Knoxville Utilities Board Retirement System
  $ 185,000       *       3,916       3,916        
Laurel Ridge Capital, LP
  $ 7,700,000       *       163,012       163,012        
Levco Alternative Fund, Ltd.(5)
  $ 8,445,000       *       178,784       178,784        
LLT Limited
  $ 1,356,000       *       28,707       28,707        
Louisiana Worker’s Compensation Corporation
  $ 500,000       *       10,585       10,585        
Lyxor Master Fund(5)
  $ 7,000,000       *       148,192       148,192        
Lyxor Master Fund c/o Forest Investment Management L.L.C.(5)
  $ 12,080,000       1.25 %     255,738       255,738        

3


 

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)






Lyxor Master Fund c/o Zola Capital Management
  $ 3,600,000       *       76,213       76,213        
Lyxor/AM Investment Fund Ltd. 
  $ 1,250,000       *       26,463       26,463        
Lyxor/ Gaia II Fund Ltd. 
  $ 5,400,000       *       114,320       114,320        
Lyxor/ JLC Fund, Ltd.(5)
  $ 631,000       *       13,358       13,358        
Macomb County Employees’ Retirement System
  $ 410,000       *       8,679       8,679        
Man Convertible Bond Master Fund, Ltd. 
  $ 12,275,000       1.27 %     259,866       259,866        
Merrill Lynch, Pierce, Fenner & Smith Incorporated(4)
  $ 54,700,000       5.64 %     1,158,020       1,158,020        
Microsoft Corporation
  $ 3,010,000       *       63,722       63,722        
MLQA Convertible Securities Arbitrage, Ltd.(5)
  $ 12,500,000       1.29 %     264,630       264,630        
Motion Picture Industry Health Plan — Active Member Fund
  $ 545,000       *       11,537       11,537        
Motion Picture Industry Health Plan — Retiree Member Fund
  $ 340,000       *       7,197       7,197        
Natexis Banques Populaires
  $ 7,000,000       *       148,192       148,192        
Nationwide Mutual Gartmore/Coda Convertible Fixed Income Fund
  $ 3,250,000       *       68,803       68,803        
Nicholas Applegate Investment Grade Convertible
  $ 20,000       *       423       423        
Nisswa Master Fund Ltd. 
  $ 4,000,000       *       84,681       84,681        
NMS Services (Cayman) Inc.(5)
  $ 5,000,000       *       105,852       105,852        
NORCAL Mutual Insurance Company
  $ 800,000       *       16,936       16,936        
Norwich Union Life & Pensions Global Convertibles
  $ 4,500,000       *       95,266       95,266        
Oakwood Healthcare Inc. (Pension)
  $ 200,000       *       4,234       4,234        
Oakwood Assurance Company
  $ 65,000       *       1,376       1,376        
Oakwood Healthcare Inc. — OHP
  $ 15,000       *       317       317        
Oakwood Healthcare Inc. Endowment
  $ 10,000       *       211       211        
Oakwood Healthcare Inc. Funded Depreciation
  $ 110,000       *       2,328       2,328        
OCM Convertible Trust
  $ 1,460,000       *       30,908       30,908        
Onyx Fund Holdings, LDC
  $ 1,700,000       *       35,989       35,989        
Oppenheimer Convertible Securities Fund(5)
  $ 5,000,000       *       105,852       105,852        
OZ Convertible Master Fund, Ltd. 
  $ 1,119,000       *       23,689       23,689        
OZ Master Fund, Ltd. 
  $ 13,801,000       1.42 %     292,172       292,172        
Partner Reinsurance Company Ltd. 
  $ 1,735,000       *       36,730       36,730        
Physician’s Reciprocal Insurers Account #7
  $ 2,200,000       *       46,574       46,574        
Port Authority of Allegheny County Retirement and Disability Allowance Plan for the Employees Represented by Local 85 of the Amalgamated Transit Union
  $ 1,000,000       *       21,170       21,170        
Prisma Foundation
  $ 110,000       *       2,328       2,328        
Privilege Portfolio SICAV
  $ 5,000,000       *       105,852       105,852        
Purchase Associates, L.P.(5)
  $ 1,840,000       *       38,953       38,953        
Quest Global Convertible Master Fund, Ltd. 
  $ 4,000,000       *       84,681       84,681        
Qwest Occupational Health Trust
  $ 585,000       *       12,384       12,384        
R2 Investments, LDC
  $ 675,000       *       14,290       14,290        
Radcliffe SPC, Ltd. for and on behalf of the Class A Convertible Crossover Segregated Portfolio
  $ 5,400,000       *       114,320       114,320        
Ramius Capital Group(5)
  $ 750,000       *       15,877       15,877        
Ramius Master Fund, Ltd. 
  $ 8,000,000       *       169,363       169,363        
Ramius Partners II, LP
  $ 350,000       *       7,409       7,409        
Ramius, LP
  $ 200,000       *       4,234       4,234        
RBC Alternative Assets LP c/o Forest Investment Management L.L.C. 
  $ 1,274,000       *       26,971       26,971        
RCG Baldwin, LP
  $ 600,000       *       12,702       12,702        

4


 

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)






RCG Halifax Master Fund, LTD
  $ 1,500,000       *       31,755       31,755        
RCG Latitude Master Fund, LTD
  $ 8,000,000       *       169,363       169,363        
RCG Multi Strategy Master Fund, LTD
  $ 500,000       *       10,585       10,585        
Relay 11 Holdings c/o Forest Investment Management L.L.C. 
  $ 701,000       *       14,840       14,840        
Royal Bank of Canada(5)
  $ 10,000,000       1.03 %     327,932       211,704       116,228  
Sagamore Hill Hub Fund Ltd. 
  $ 22,500,000       2.32 %     476,334       476,334        
Salomon Smith Barney Inc.(4)
  $ 16,800,000       1.73 %     355,662       355,662        
San Diego County Employee Retirement Association
  $ 1,000,000       *       21,170       21,170        
SCI Endowment Care Common Trust Fund — First Union
  $ 80,000       *       1,693       1,693        
SCI Endowment Care Common Trust Fund — National Fiduciary Services
  $ 270,000       *       5,716       5,716        
SCI Endowment Care Common Trust Fund — Suntrust
  $ 100,000       *       2,117       2,117        
SEI Private Trust Company
  $ 860,000       *       18,206       18,206        
Silverback Master, LTD
  $ 10,000,000       1.03 %     211,704       211,704        
Single Hedge US Convertible Arbitrage Fund
  $ 961,000       *       20,344       20,344        
Southdown Pension Plan
  $ 175,000       *       3,704       3,704        
Southern Farm Bureau Life Insurance Company
  $ 2,000,000       *       42,340       42,340        
Sphinx Convertible Arbitrage c/o Forest Investment Management L.L.C. 
  $ 543,000       *       11,495       11,495        
Sphinx Convertible Arbitrage Fund SPC
  $ 70,000       *       1,481       1,481        
SPT
  $ 2,400,000       *       50,808       50,808        
St. Thomas Trading, Ltd.(5)
  $ 27,825,000       2.87 %     589,066       589,066        
State Employees’ Retirement Fund of the State of Delaware
  $ 2,305,000       *       48,797       48,797        
Sturgeon Limited
  $ 2,063,000       *       43,674       43,674        
Sunrise Partners Limited Partnership(5)
  $ 6,700,000       *       155,041       141,841       13,200  
Swiss Re Financial Products Corporation(5)
  $ 41,900,000       4.32 %     887,039       887,039        
TCW Group, Inc.
  $ 12,625,000       1.30 %     267,276       267,276        
Teachers Insurance and Annuity Association
  $ 12,700,000       1.31 %     268,864       268,864        
Topanga XI(5)
  $ 9,606,000       *       203,362       203,362        
Transamerica Life Insurance & Annuities Corp.(5)
  $ 39,200,000       4.04 %     829,879       829,879        
UBS AG LON F/ B/ O PB(4)
  $ 17,500,000       1.80 %     370,482       370,482        
UBS O’Connor LLC F/ B/ O O’Connor Global Convertible Arbitrage Master Ltd.
  $ 5,100,000       *       107,969       107,969        
UBS Securities LLC
  $ 635,000       *       13,443       13,443        
Union Carbide Retirement
  $ 1,700,000       *       35,989       35,989        
United Food and Commercial Workers Local 1262 and Employers Pension Fund
  $ 860,000       *       18,206       18,206        
Univar USA Retirement Plan
  $ 430,000       *       9,103       9,103        
White River Securities L.L.C.(4)
  $ 15,000,000       1.55 %     317,556       317,556        
Wolverine Asset Management, LLC(5)
  $ 5,194,000       *       109,959       109,959        
XAVEX Convertible Arbitrage #5
  $ 500,000       *       10,585       10,585        
XAVEX Convertible Arbitrage 4 Fund c/o Forest Investment Management L.L.C. 
  $ 520,000       *       11,008       11,008        
Zazove Convertible Arbitrage Fund, L.P.
  $ 4,000,000       *       84,681       84,681        
Zazove Hedged Convertible Fund, L.P.
  $ 3,500,000       *       74,096       74,096        
Zazove Income Fund, L.P.
  $ 3,000,000       *       63,511       63,511        
Zola Partners, L.P.
  $ 2,100,000       *       44,457       44,457        

5


 

                                         
Aggregate Principal Percentage
Amount at Maturity of Number of Number of Number of
of Debentures Debentures Shares of Shares of Shares of
Owned Before Outstanding Common Stock Common Stock Common Stock
Offering and That Before Held Before Offered for Held After
Name May Be Sold Offering Offering(1) Sale(1)(2) Offering(3)






Zurich Institutional Benchmarks Master Fund Ltd.
  $ 4,000,000       *       84,681       84,681        
Zurich Master Hedge Fund c/o Forest Investment Management L.L.C. 
  $ 3,461,000       *       73,270       73,270        
All other Holders of the Debentures or future transferees, pledges, donees, assignees or successors of any such holders(6)
  $ 2,574,000       0.27 %     54,492       54,492       (7)
     
     
     
     
     
 
Total
  $ 969,790,000       100.00 %     20,903,348       20,530,764       372,584  
     
     
     
     
     
 

  * Less than one percent (1%).

(1)  Assumes conversion of all of the holder’s Debentures at the initial conversion rate of 21.1704 shares of Common Stock per $1,000 principal amount at maturity of the Debentures which gives effect to the four-for-one stock split effected on June 18, 2003. This conversion rate is subject to further adjustment as described under “Description of Debentures — Conversion Rate Adjustments.” As a result, the number of shares of our Common Stock issuable upon conversion of the Debentures may increase or decrease in the future. In addition, the number of shares of Common Stock listed for each holder does not include fractional shares. Holders will receive a cash payment for any fractional share resulting from conversion of the Debentures, as described under “Description of Debentures — Conversion Rate and Conversion Procedures.”
 
(2)  The shares of Common Stock that may be sold upon conversion of the Debentures by any selling securityholder will not represent 1% or more of our outstanding Common Stock.
 
(3)  Assumes all of the Debentures and shares of Common Stock issuable upon their conversion are sold in the offering. Share numbers have been adjusted to reflect the four-for-one stock split.
 
(4)  This selling securityholder has identified itself as a registered broker-dealer and, accordingly, an underwriter. Please see “Plan of Distribution” for required disclosure regarding these selling securityholders.
 
(5)  This selling securityholder has identified itself as an affiliate of a broker-dealer. Please see “Plan of Distribution” for required disclosure regarding these selling securityholders.
 
(6)  New selling securityholders, if any, will be set forth from time to time in post-effective amendments to the registration statement of which this prospectus forms a part or prospectus supplements, as required.
 
(7)  Assumes that any other holders of Debentures, or any future transferees, pledgees, donees or successors of or from any such other holders of Debentures do not beneficially own any Common Stock other than the Common Stock issuable upon conversion of the Debentures.
 
(8)  Goldman, Sachs & Co. was the Initial Purchaser of the Debentures.

6