W. Va. Code § 55-9-1: Gaming contracts void.

Every contract, conveyance, or assurance, of which the consideration, or any part thereof, is money, property, or other thing won or bet at any game, sport, pastime, or wager, or money lent or advanced at the time of any gaming, betting, or wagering, to be used in being so bet or wagered (when the person lending or advancing it knows that it is to be so used) shall be void as between the parties thereto, and as to all persons except such as hold or claim under them in good faith, for value, and without notice of the illegality of the consideration.