SCHEDULE 13D (RULE 13d-101) Information to be Included in Statements Filed Pursuant to Rule 13d-1(a) and Amendments Thereto Filed Pursuant to Rule 13d-2(a) SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 Under the Securities Exchange Act of 1934 (Amendment No. 15) ALLIANCE GAMING CORPORATION ------------------------------------------------------------------------------- (Name of Issuer) Common Stock, Par Value $.10 per Share ------------------------------------------------------------------------------- (Title of Class of Securities) 36465410 ------------------------------------------------------------------------------- (CUSIP Number) Alfred H. Wilms 2, BUS 6, St. Jansvliet 2000 Antwerp BELGIUM Telephone: 011-32-32-314-146 ------------------------------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) December 30, 2003 -------------------------------------------------------------------------------- (Date of Event Which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report to acquisition which is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ]. Page 1 of 4 Pages SCHEDULE 13D CUSIP NO.: 36465410 (1) NAME OF REPORTING PERSON: Alfred H. Wilms S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON: No Social Security Number (2) CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) (b) (3) SEC USE ONLY (4) SOURCE OF FUNDS: (5) CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) or 2(e) (6) CITIZENSHIP OR PLACE OF ORGANIZATION: Belgium NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: (7) SOLE VOTING POWER: 3,832,892 (8) SHARED VOTING POWER: 0 (9) SOLE DISPOSITIVE POWER: 3,832,892 (10) SHARED DISPOSITIVE POWER: 0 (11) AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON: 3,832,892 (12) CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (13) PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11): 7.6% (14) TYPE OF REPORTING PERSON: IN Page 2 of 4 Pages Alfred H. Wilms (the "Reporting Person") hereby amends and supplements his Schedule 13D as previously amended, originally filed January 9, 1984, relating to the shares of common stock, par value $.10 per share ("Issuer Common Stock"), of Alliance Gaming Corporation, a Nevada corporation (the "Issuer"), with principal executive offices at 6601 South Bermuda Rd., Las Vegas, Nevada 89119. ITEM 5. INTEREST IN SECURITIES OF THE ISSUER. (a) As of the date hereof, the Reporting Person beneficially owns 3,832,892 shares(1) of Issuer Common Stock (7.6% of outstanding). (b) Subject to the terms of his irrevocable proxy and the Stockholders Agreement, as amended, described in and filed as exhibits to Amendment No. 11 to the Reporting Person's Schedule 13D, the Reporting Person has sole power to vote or dispose of the 3,832,892 shares. Between November 6, 2003 and November 21, 2003, the Reporting Person disposed of an aggregate of 300,400 shares of Issuer Common Stock upon the exercise of exchange traded calls that he had written for a total consideration of $7,012,500 as follows: Date No. of Shares Sold Price Per Share ------ -------------------- --------------- 11/06/2003 (1,000) 22.50 11/10/2003 (400) 22.50 11/13/2003 (1,000) 22.50 11/14/2003 (700) 25.00 11/21/2003 (100,700) 25.00 11/21/2003 (196,600) 22.50 ---------- 1 This number reflects the two-for-one stock splits of Issuer Common Stock effective August 21, 2001 and April 9, 2002. Page 3 of 4 Pages SIGNATURE After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. December 30, 2003 By: /s/ Alfred H. Wilms ------------------- Alfred H. Wilms Page 4 of 4 Pages