In order for you to play Prison Tycoon 3: Lockdown on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Microsoft® Windows® XP/Vista
Processor (CPU):
Pentium® III 1.4 GHz or greater
Memory (RAM):
512 MB RAM
Graphics Card:
64 MB DirectX® 9 compatible video card (ATI Radeon 8500, Geforce 5200 or Intel GMA 900 series)
Sound Card:
DirectX 9 compatible sound card
Input:
Keyboard and mouse