The content of the game is about me taking a few (seemingly three or four) NPC teammates to destroy enemies (they are people, not zombies or monsters). The enemies are marked with small red circles on the map. He looks like an Afghan or Iraqi Arab... He can direct his teammates to rush to the front and fight first. There are not many levels, and the scenes in each level are different. I remember that one level was in a room that required turning on night vision goggles (because as soon as you entered, you had to briefly turn on the switch). The room was filled with boxes, and you could jump up and down to fight enemies. There is another level that is outside an old building. To break in, first throw a grenade inside from outside the wall, then ask your teammates to enter the yard to fight, and then rush upstairs together (the stairs are open-air, so you have to fight while going up). The next level is to enter a room with a passage, go through it and go to the end, open the door in the space, and a bunch of enemies will shoot with machine guns behind the pile of sandbags on the opposite side. Finally, I remember that I made it to the fourth level, but failed the fifth level. Then there are not many levels left.