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