New Line Cinema and Threshold Entertainment released Paul Anderson’s “Mortal Kombat” back in 1995, three years after the same-named video game caused a stir verging on moral panic for allowing players to indulge in shocking violence. These were the days when gaming wasn’t an accepted mainstream practice, instead seen as a refuge for social misfits and potential school shooters; the people who knew “Mortal Kombat” were the ones playing it, and everyone else knew it from cultural pearl clutching. After almost thirty years, two movies, two TV series, and eighteen game installments, “Mortal Kombat” is about as mainstream as games get, which probably explains why, at long last, after spending ages in development hell, there’s a new “Mortal Kombat” movie available to stream.