This gamemode is currently a WIP on our Github, led by sawu-tg.
This game mode, in comparison to the last two, has gone surprisingly unnoticed by the community, so I've made this thread to both spread awareness and give feedback.
Description of how it works, lifted from the Git page:
The goal is to stay alive.
Update:
"A number of things changed, but this is now merge ready.
Players no longer converted into controllable robots, instead a tiny chance to spawn evil robot NPCs from them on hit.
"Overlords" are chosen at the start of the game to control a hive each."
Pictures, also lifted from the Git page: