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