In order for you to play Sheltered on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP
Processor (CPU):
Dual Core CPU
Memory (RAM):
1 GB RAM
Graphics Card:
GeForce 7800, AMD HD 4600, Intel HD Graphics 3000 or above
DirectX:
Version 9.0
Storage:
600 MB available space
Sound Card:
Windows Compatible Card