Just as online blackjack and roulette in WV, there are no regulated online slot machine sites in West Virginia. All of the online action comes from offshore sites with no licensure or regulations. Maybe in 2020 you will be able to play slots online in West Virginia legally.
West Virginia is going big with their casinos and the casinos are returning the favor. There are thousands of slot machines available in the West Virginia casinos. Slots have always been incredibly popular and the main attraction and that trend continues here.