In order for you to play Anna's Quest on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows Vista SP2, Windows 7 SP1, Windows 8 (32/64 bit versions)
Processor (CPU):
2 GHz Dual Core CPU
Memory (RAM):
2 GB RAM
Graphics Card:
Nvidia GeForce 205, AMD Radeon HD 3400 Series with 256 MB VRAM, latest OpenGL driver
DirectX:
Version 9.0c
Storage:
1400 MB available space
Sound Card:
DirectX 9.0c Compatible Sound Card with Latest Drivers
In order to play Anna's Quest on Windows with maximum graphics settings, you need a computer with a configuration no worse than the following
OS *:
Windows Vista SP2, Windows 7 SP1, Windows 8 (32/64 bit versions)
Processor (CPU):
2.6 Ghz Dual Core CPU
Memory (RAM):
4 GB RAM
Graphics Card:
Nvidia GeForce 405, AMD Radeon HD 5400 Series or higher
DirectX:
Version 9.0c
Storage:
1400 MB available space
Sound Card:
DirectX 9.0c Compatible Sound Card with Latest Drivers