. WinPrincess is a reputable online betting website. 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. Register Login. The company was founded in and is based in Buenos. ×. Winprincess | Online Casino | SportsBook in Tanzania. Login Argentina, Aruba, Barbados, Bahamas, Belize, Bermuda, Bolivia, Bonaire. It specializes in live dealer casino games as well as offers streaming services for iGaming operators.