Some of these games , despite containing objectively violent content , have been affirmatively labeled " non-violent video games " by marketers and faith-based non-violent gaming communities . In direct response to the Columbine High School massacre ( alleged to have been caused by the shooters ' obsession with the game , '' Doom '' ) , Rev. Ralph Bagley began production on '' Catechumen '' , a Christian first-person game produced by N'Lightening Software involving holy swords instead of guns . In '' Catechumen '' , the player fights inhuman demons using holy armament . When " sent back " the demons produce no blood or gore , and for this reason it has been described as a non-violent game . The intent of '' Catechumen '' , according to Rev. Bagley , is " to build the genre of Christian gaming . People are tired of having these violent , demonic games dictating to their kids . " Among Christian FPS games , a lack of gore has often been used as the minimum standard for non-violence . Christian game reviewers have at times characterized non-Christian games such as '' Portal '' and '' Narbacular Drop '' as comparatively non-violent games despite their lack of a Christian focus
Columbine High School massacre
Columbine High School massacre
Nonviolent video game