Not everyone is a hardcore pro gamer with lightning reflexes and computer eyes that scan every pixel. Not every gamer has twenty years of experience guiding every button press. They might find modern games very challenging, because those games are designed by and for veteran players. What about gamers who have a greater issue, a physical disability that prevents them from working the controls with the speed of a concert pianist? For them, games that are merely challenging become impossible. Accessibility is the practice of designing games so people with difficulties can play along without being confronted by an impossible situation. GameInformer has the story.