2014 Event Dong Nguyen, creator of the 'Flappy Bird' app, announces that he will reintroduce the app sometime in the future; he removed the app in February after fearing that it was too addictive 2010 Event Game-maker NCsoft is sued by a man claiming he would not have played Lineage II if he knew it was addictive and render him unable to function 1997 Event Liggett admits cigarettes are addictive 1995 Event Federal judge allows lawsuit claiming U.S. tobacco makers knew nicotine was addictive and manipulated its levels to keep customers hooked 1988 Event Surgeon General C. Everett Koop reports nicotine as addictive as heroin 1981 Event Dr. George Nichopoulas is acquitted of overprescribing addictive drugs for Elvis Presley