In order for you to play Giana Sisters: Twisted Dreams - Rise of the Owlverlord on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP
Processor (CPU):
Intel Core 2 Duo @ 2.8 GHz / AMD Athlon II X2 @ 2.8 GHz
Memory (RAM):
2 GB RAM
Graphics Card:
SM3.0 DX9.0c level hardware (Nvidia GeForce 6800, ATI X1800 XT or higher)
DirectX:
Version 9.0
Storage:
3 GB available space
In order to play Giana Sisters: Twisted Dreams - Rise of the Owlverlord on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
OS *:
Windows Vista / Windows 7 / Windows 8
Processor (CPU):
Intel Core i5 @ 2.66 GHz / AMD Phenom II X4 @ 3.0 GHz (or any Dual Core CPU)
Memory (RAM):
3 GB RAM
Graphics Card:
Nvidia GeForce GTX 280, ATI HD 4800 or higher
DirectX:
Version 10
Storage:
3 GB available space