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

: Resides in a dark, Gothic nightmare world. She mocks the monsters that once terrified her as a child.

: 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