The 1993 action game Doom? Yeah, it can manage *nix processes.
Initially started by a University of New Mexico student in 1999 and improved a year later, psDoom is a novelty source port that doubles as a process manager. Monsters tied to processes on the system are spawned in a secret area of E1M1 (or MAP01), with their process details printed on top of them. Wounding these “pid monsters” adjusts their priority, while killing them… kills the process. To make things a little less self-destructive, processes can’t damage each other with infighting.
From the author’s website:
I will not assume any liability for damage caused from running this code. Especially if you are running it as root. In fact, we both know that this will cause damage to the system, and that’s why you want to try it. You have been warned.
Thanks to suicunedude for reminding me of this!