The game was released for Microsoft Windows, Linux,Mac OS X,and Xbox 360, being the first game in the Postal series to be released on a video game console, and the first Source based game released for Linux. A PlayStation 3 port was announced in later stages of development, which will probably be released shortly after the initial release.

 

Supported OS: Windows® 7 / Vista / Vista64 / XP
Processor: Pentium 4 3.0GHz
Memory: 1 GB for XP / 2GB for Vista
Graphics: DirectX 9 compatible video card with 128 MB, Shader model 2.0. ATI X800, NVidia 6600 or better
Hard Drive: At least 7.5 GB of free space
Sound Card: DirectX 9.0c compatible sound card