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Yes, I agree, I have played video games most of my life. This one, just particularly sets off an alarm. I’ve wondered for a while, why are the majority of the games we all play and have available needing to be intensely violent or aggressive. I enjoy those games and generally don’t find any problem with them. I haven’t played this game and can’t speak from experience, but a good look at the description is enough to turn me away on this one; no offense meant to the writing of the description, that’s just how I feel.

Sure, but that's just your personal taste. Nothing wrong with that. It wouldn't affect anyone's mind and it is weird to say it would.

I have to say, Plague, Inc is mostly like a board game, so if you got weirded out by it, that's kind of funny.

Is it an existing game?

The boardgame version was released later.