 As technology has advanced, such studies have adapted to include the effects of violent games and non-violent games in new media methods such as immersive virtual reality simulations.Results have varied, with some research indicating correlation between violence in video games and violence in players of the games, and other research indicating minimal if any relationship.Despite the lack of solid conclusion on the issue, the suggestion that violent games cause youth violence together with the clear popularity of violent video game genres such as the first-person shooter have led some game designers to publish non-violent alternatives.