Hello. This software name is "pacman". but "PAC-MAN" is trademark. https://tsdr.uspto.gov/#caseNumber=76638049&caseType=SERIAL_NO&searchType=statusSearch 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. Thanks.
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 :)