Thousands of people witness sudden cardiac arrest every day but few step in and help, because they don’t know what to do. This hesitancy is part of why nine out of 10 victims don’t survive. We were tasked with increasing survival rates through education, but instead of making a typical, boring instructional video, we created the Save-a-Life Simulator, an immersive online experience that depicts a man suddenly collapsing and then presents users with choices that will determine whether he survives or not.