Everyone can recognize the signs of those people who've become addicted to games on their phones and tablets — every free moment, they're back staring intently at the screen, periodically tapping and giggling as they solve puzzles, defeat imaginary enemies or reach a new level. Actually, everyone recognizes it because they've all been there before. There's one company in particular to thank for this phenomenon: PopCap Games. They're the masterminds behind ridiculously addictive games like Bejeweled, Zuma, Peggle and the grandaddy of them all, Plants vs. Zombies. These glorious time-suckers have captured the world's imagination with original ideas, gorgeous animation and gameplay that keeps people coming back for more — now on all sorts of platforms, including PC, Mac, iPad, iPhone, Facebook, Xbox and Nintendo DS.