In order for you to play Planet Alcatraz on Windows with minimal graphics settings, your computer must meet the following requirements
OS *:
Windows® XP/Vista/7/8
Processor (CPU):
Intel Pentium IV 3 GHz or AMD Athlon 1,4GHz+
Memory (RAM):
1 GB RAM
Graphics Card:
nVIDIA GeForce 6600/ATI Radeon X800, 128 MB
Storage:
5 GB available space
Sound Card:
DirectX 9-compatible sound card