This software name is "pacman".
but "PAC-MAN" is trademark.
Trademark law is forbid that use similar trademark without permission trademark owner. (I think)
I think that this is trademark problem.
It is non-free.
No one is going to confuse the Arch package manager with a game where you eat pellets and get chased by ghosts.
If this was a game, it would be inappropriate, but because it is not, it is fine.
Thank you spot for the voice of sanity :)