

Unlike the CSO counterpart, this mode has the combination with Parkour Mode, and soldiers has to come to the checkpoint and wait for about 40 seconds for the Portal to be opened to the next stage (as the map has been broken into many parts). Later on, CrossFire introduced the Mutant Escape Mode, which is obviously inspired from Zombie Escape in Counter-Strike Online. The main differences are that the Hero was given a different weapon FAL Custom-Camo (still with the M203 attachment though) along with a mutation vest to give him much more chance to survive, and Slug/lesser level mutants still can't use their skills, similar to Mutation Mode, unlike the CSO counterpart. Then Zombie Mod 3 was released later on, which CrossFire kept the basics intact for the most part when it was released here as Hero Mode. The original/beta Mutation Mode were only released for a short period of time in China, Vietnam and Japan versions before being replaced with the current Mutation Mode. When they released Zombie Mod 2, they did just that, however Smilegate simply added the new features onto the already established mode instead of making a new one. Both Mutation and Zombie Mod 1 were released with no additional zombies/mutants, supplies, health recovery and evolutions. Mutation Mode and Hero Mode were both directly taken from Counter-Strike Online, which were known as Zombie Mod 1-2 and 3 respectively.
