In order for you to play Cockroach Simulator on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows XP, Windows Vista, Windows 7
Processor (CPU):
Dual core CPU @2GHz (Pentium D or better)
Memory (RAM):
1 GB RAM
Graphics Card:
2GB Video RAM - will work with less, but wouldn't look too good.
DirectX:
Version 9.0
Network:
Broadband Internet connection
Storage:
500 MB available space
Sound Card:
100% DirectX 9.0c compatible audio device