I'm playing this game Dark Souls and there's this ring in the game called "Covetous Serpent Ring" and I felt like it was wrong of me to put on that ring because of the word "covetous." I feel like I sinned or just did something wrong. I don't use items that have "Evil" or "Demon" in the name of the item either because it makes it look bad.
Have you ever felt bad or felt like you sinned because of doing something in a game?
covet just means to want something badly if your deisres dont cause you to do harm to any one how are they wrong?
whats more important then the name is how you feel about the items do you covet this ring not just want it but crave it?
do you covet any other items in the game because your not measured by what the items you have are called but what you did to do to get them and how you feel about them and what effect having and using them has on the game world if theirs items you want more then the ring then your closer to being covetous with those items instead, no matter what there called.
do you have to role play in a manner you fined to be unethical to get the ring or demonic items?
will using these items cause evil to happen in the game?
if not you may as well use these things to do as you see fit in the game
all these items are bits of code made and named by the same group of people if getting them and using them doesn't effect the game world in any way then just using them is not role playing as evil
also in regards to demonic items are the being called demons in the game inherently evil? remember in a fantasy world you not always using are worlds religious cosmology so a demon may not always be evil or a demon at all by your reckoning a god may not always be good and what a game considers to be holy may be different then what you consider to be so
no then if you determine demons to be evil are items call demonic evil in some way them selves or are they merely neutral tools crafted by or out of beings you would consider evil
in the latter case i see nothing wrong with using those items for good as you see it