: Now a teenager, Giana’s ability to "twist" her surroundings is a metaphor for her transition through life and her search for identity. The Two Personas :

: One night, a portal opens and Giana’s sister, Maria, is sucked into the Dream World and devoured by the dragon Gurglewocky .

: The monsters Giana faces are often symbolic manifestations of real-world figures she struggles with, such as her father or strict teachers. Free and Legal Access

There is no permanent "free" full version of the game. It is a commercial product available on major digital storefronts: Giana Sisters: Twisted Dreams - GOG.com