Wisconsin Statutes Miscellaneous Actions, Proceedings and Procedure (Ch. 895 to 900) § 895.055. Gaming contracts void

(1) All promises, agreements, notes, bills, bonds, or other contracts, mortgages, conveyances or other securities, where the whole or any part of the consideration of the promise, agreement, note, bill, bond, mortgage, conveyance or other security shall be for money or other valuable thing whatsoever won or lost, laid or staked, or betted at or upon any game of any kind or under any name whatsoever, or by any means, or upon any race, fight, sport or pastime, or any wager, or for the repayment of money or other thing of value, lent or advanced at the time and for the purpose, of any game, play, bet or wager, or of being laid, staked, betted or wagered thereon shall be void.

(2) This section does not apply to contracts of insurance made in good faith for the security or indemnity of the party insured.

(3) This section does not apply to any promise, agreement, note, bill, bond, mortgage, conveyance or other security that is permitted under chs. 562 to 569 or under state or federal laws relating to the conduct of gaming on Indian lands.