%. Return to player. . A resourceful game guide outlining rules and. Try Monster Disco XtraHold slot online for free in demo mode with no download or no registration required. Game Type. Bodog Casino offers an inviting plus games including a fully launched division for Sports, Poker and Horses. Monster Disco XtraHold offers % return, High dispersion and x win potential, max win. Play Monster Disco XtraHold at HelloMillions, and enjoy a high volatility slot game by Swintt. GamesandCasino is a comprehensive online gambling guide filled to the brim with new and reputable online casinos, slot game reviews, bonus offers and much. GamesandCasino is a comprehensive online gambling guide filled to the brim with new and reputable online casinos, slot game reviews, bonus offers and much. With a quite balanced math and the possibility.