Minimum System Requirements
Windows
OS:
Windows 10 (64-bit) Processor:
Intel Core i5-7500 / AMD Ryzen 5 1600 RAM:
8 GB RAM Video card:
NVIDIA GeForce GTX 780 / AMD Radeon RX 470 Sound card:
DirectX compatible Disk space:
40 GB available space 
MAC
Postal 4: No Regrets is not officially supported on macOS. However, some users have managed to run the game using Windows emulation software or by installing Windows on a separate partition via Boot Camp
Linux
Postal 4: No Regrets does not have an official Linux version. Players have used compatibility layers like Steam Play's Proton or Wine to run the game on Linux systems, but performance and compatibility can vary
Recommended System Requirements
Windows
OS:
Windows 10 (64-bit) Processor:
Intel Core i7-9700K / AMD Ryzen 7 3700X RAM:
16 GB RAM Video card:
NVIDIA GeForce GTX 1080 / AMD Radeon RX 5700 Sound card:
DirectX compatible Disk space:
40 GB available space MAC
Postal 4: No Regrets is not officially supported on macOS. However, some users have managed to run the game using Windows emulation software or by installing Windows on a separate partition via Boot Camp
Linux
Postal 4: No Regrets does not have an official Linux version. Players have used compatibility layers like Steam Play's Proton or Wine to run the game on Linux systems, but performance and compatibility can vary
We recommend playing Postal 4: No Regrets on a Windows PC that meets or exceeds the recommended system requirements. If you're trying to play on a Mac or Linux, be prepared for potential technical issues and performance changes.
