ZERO HOUR feels to me like

a new installment in the Swat series, knowing that Swat is the originator of the tactical FPS, combining FPS, tactics and realism back in the 90s. The realism of Swat, however, is reflected in the fact that there are many non-lethal weapons and "bloodlessness" is the main gameplay of Swat, while ZERO HOUR replaces this part with combat. Even so, ZERO HOUR's combat experience is not comparable to R6's, and not just because of bugs, modelling, feel and other details. Because for ZERO HOUR, after all, out of the prison testing phase, R6 was also gradually getting rid of bugs after the health action.