>>697822
This (mostly) >>697831 and this >>697852
1 Corinthians 10:31 and Colossians 3:17 are very important to help us discern these kind of things, but in this case, I advice you to read Psalms 11:5 as well.
Even though (and please correct me if I'm wrong) violence is never specifically called "a sin" in the Bible, God hates those who love it. If we play a violent game, or watch a violent movie/show, then we love violence. There's no other reason for us to partake in those activities. If we hated violence, as He hates it, we would be avoiding it instead of seeking it.
This applies to every sin. How do you think God feels if we play a game or watch a movie/show that glorifies fornication, or murder, or the occult, etc? I don't think He likes it. And yes,most games, music, movies, series & anime actually glorify these things, but this shouldn't be a surprise, given the fact that Satan is the god/prince of this world..
Now, coming back to 1 Corinthians 10:31 and Colossians 3:17, can we glorify God with these activities?
(Luke 14:33, Romans 12:1-2, 2 Corinthians 5:4-5)