There is also prior art, PSDoom:

> The Doom process manager (PSDoom) is a modification of the game Doom that displays representations of the processes running on a machine. Rather than using standard text-mode UNIX tools to view and manipulate processes, one surveys and shoots at a room full of bloodthirsty mutants, as shown in Figure 1.

> Less than a week after the initial version of the code was written, the project’s website was attracting tens of thousands of visitors per day. Approximately 800 responses were e-mailed to the author or www.slashdot.org within the first two months. Of these responses 27% praised the project, 23% offered suggestions for improving PSDoom, 10% found the project funny, 10% reported technical problems, 8% related PSDoom to science fiction or to the future of interfaces, 1% disliked the project, and 0.6% were frightened by its implications.

"Doom as an Interface for Process Management" (2002), https://www.researchgate.net/publication/2522409_Doom_as_an_...

I remember when this was announced. It had another humorous side effect - in Doom monsters can kill other monsters, which meant the PSDoom could result in processes randomly killing one another.