POSTAL 4: No Regerts is a satirical and outrageous comedic open world first person shooter and the long-awaited true sequel to what’s been fondly dubbed as "The Worst Game Ever™", POSTAL 2! (No third game is known to exist.)

- Approach your errands in a non-linear fashion within total free roam, open world, sandbox gameplay! Seek out optional side quests for additional rewards! Or ignore all of that and just cause general pandemonium at your own leisure in the town of Edensin!
- Pick-Yer-Dude! Choose Jon St. John, industry veteran and legendary voice for Duke Nukem, as the voice of the POSTAL Dude! Or go with returning fan favorites Rick Hunter (P1 & P2) and Corey Cruise (PIII) as alternate voice choices, giving you more POSTAL Dude than ever at your fingertips!
- Add that POSTAL twist to your weaponry with potent power-ups such as the classic Cat Silencer, the slow motion-inducing Catnip, and the dual wielding Energy Drink! Supercharge your fists, mighty foot, and urethra with a dose of the testicle-shrinking Vitamin X!
- Experience a bevy of interactivity as you feed Doggie Treats to strays to gather canine armies to do your dirty work, stock up on inventory (for a price!) at automated Vending Machines, and, for the first time ever in the franchise, use and flush functioning toilets!