Never released portsAlthough the three versions featured here did (briefly) hit the shelves, no Spectrum version did. While one was definitely planned, some within the company claim that nothing was ever done towards it. If this is the case, Crash! magazine have some explaining to do, as not only did they review it, they gave it 90%.
A CPC conversion was also planned and the situation is very similar. At least one magazine reviewed it (Amstrad 100 pour cent), this port is however circulating in unfinished form, apparently leaked.
Problems with NintendoThe game is almost an exact copy of Nintendo's Super Mario Brothers, with some additions. The play mechanics are almost exactly the same, and graphics are superficially similar. While it is sometimes alleged that Nintendo sued Rainbow Arts and this led to the game being pulled out of the market, developer Armin Gessert stated in an interview (published in a "Classic Gaming" special by German magazine PC Action) that he did not know about any such legal action. It was sufficient that Nintendo got in contact with Rainbow Arts, and let them know their view on the matter before possibly taking more drastic measures. After being taken off the shelves, Giana Sisters was one of the most popular pirated games, though. Many years later, Nintendo took a different, much more relaxed position concerning the Giana Sisters DS game according to Gessert.
Information also contributed by Martin Smith .