[pimlottc]

You might be thinking of this Doom mod that create monsters for each system process and would kill an actual process every time you killed one:

https://www.cs.unm.edu/~dlchao/flake/doom/chi/chi.html

[bee_rider]

I think by brain has combined this program and the inner space program that the sibling comment mentioned.

[butz]

Haven't looked it up in detail yet, but I am wondering if game process is a boss or player entity?