Killing is without question one of, if not the, most despicable act in the history of mankind. The ability to end the life of another human being is not something that should be employed, much less abused. So leave it to video games to give you the chance to end the life of imaginary or virtual characters – both humans and non-humans. If you want to see how horrifying the act is, then you can check out these free online killing games at Manamonster. Be warned, though; these killing games can be rather morbid and bloody, so don’t dive into them with a very full stomach. But if you want a game with significantly less blood, then play the role of an adventurer in Epic Adventure Times, a game that has similar aesthetics to old Castlevania games. Actually, you’re better off playing that game, because bloody games might give you nightmares for endless nights. And needless to say, don’t try these games in real life.