I don't know if there is already done for the page, because the idea is not new, but I would like it to be:
The mode that has a maximum of 4 Terrorists chosen at random, who will have the C4 which they must plant VS the rest of the CTs that would play the role of Zombies, which will spawn over and over again, until the bomb explodes.
Being the terrorists protecting the C4 and the Zombies try to "deactivate" it or kill all the Terrorists.
Could be a separate mode or a submode of Zombie Plague 5.0.8a