They offer a wide range of betting services, including sports betting, casino games, and virtual sports. Winprincess | Online Casino | SportsBook in Tanzania. The company was founded in and is based in Buenos. WinPrincess, online, sports Betting Casino, site in, tanzania, bonus Argentina (+54), Armenia (+), Aruba (+), Australia (+61), Austria. WinPrincess is a reputable online betting website. . It specializes in live dealer casino games as well as offers streaming services for iGaming operators. Login Argentina, Aruba, Barbados, Bahamas, Belize, Bermuda, Bolivia, Bonaire. ×. Register Login.