Once a human is killed by a zombie, they respawn as a zombie and join the zombie team. The objective of the zombies is to infect the humans by killing them. The zombies are typically stronger than humans and have special abilities, such as increased health, enhanced speed, or unique attacks. In this game mode, players are divided into two teams: humans and zombies. The mod introduces the concept of a zombie apocalypse within the Counter-Strike universe. It originated in the early 2000s as a modification for the game and quickly gained popularity among players. Counter-Strike Zombie Mod is a popular server game mode in the first-person shooter game Counter-Strike series.