Do you mean CSOL? It can be used in traditional and team modes, but as a biochemical mode, this is not possible, because this is a system setting in the game, and the purpose is to reflect the advantages of zombies. In the game, the background color of the biochemical mode is darker than other traditional modes, which is to create a scary atmosphere. Secondly, in the map, human vision is normal, and it is not easy to see in dark places. Zombies can see everything clearly, but zombies have a full-screen observation mode with no blind spots. They can observe everything clearly from anywhere. Just think about it, if night vision devices become standard equipment, why do you need to set the visual effects of zombies to no-dead-angle mode in the game? Since humans can observe everything clearly at any time and anywhere, why does the game set the background of the entire map to be so dark and scary? It's totally unnecessary, and the game is going to give you a feeling of terror and tension. You put on the night vision goggles every time, and the zombies won't even try to trick you. Then how can you feel the sudden tension and terror? ? If this is the case, then the biochemical mode is not scary at all. Players will find it less exciting after playing for a long time. Can this still highlight the characteristics of the biochemical mode? Can this still be called biochemical mode? You thought it was CF. The night vision device is set up in the form of a supply box in the biochemical mode. Players can only obtain the night vision device by obtaining the supply box in the map. While supplying, they will also receive supplies of bullets, bombs and other ammunition. However, instead of doing this, more players prefer to get dual-wielding weapons such as MP7 or Cyclone AK, because it will become easier to kill zombies, and night vision devices can only be used as auxiliary tools, and you cannot get one Night vision goggles to kill zombies, right? After playing the mode for a long time, players will become more vigilant and experienced. Here, night vision devices are dispensable for that type of player. The important thing is to be able to pick up powerful weapons. LZ will be played for a long time in the future. You can feel it.