MarvelBet offers the best online casino, sports betting and entertainment games in Bangladesh. #1 Ranked for Mobile Sportsbook in Guatemala. Marvelbet. [HOST] offers online sports betting and casino games to players in Guatemala; Guinea; Guinea-Bissau; Guyana; Haiti; Heard and McDonald Islands. . Enjoy a variety of games including Baccarat. melbet. Great selection of matches to bet on, with an emphasis on Football and eSports; Customizable interface.