Single-seat single-engine fighter

In the message below the steam of ZERO HOUR, the word that appears most often is "Rainbow Six: Siege". For many FPS game players, the best CQB tactical game is currently "Rainbow Six: Siege", and "ZERO HOUR" can be used by players to compare with "Rainbow Six: Siege", think it is a little something, today we will analyze the gap between "ZERO HOUR" and "Rainbow Six: Siege".