It's already chewed up some big names on the retail scene, but the game-downloading trend shows no sign of being sated. Fresh figures from market research firm NPD show that American digital game sales (including rentals and DLC) amounted to $2.04 billion in the fourth quarter of 2011, which represents a nine percent year-on-year hike at a time when physical game transactions fell three percent. Things are going the same way across the Atlantic, with the UK, France and Germany adding a further $1.29 billion to the burgeoning click-to-buy market. Industry types will surely welcome the news, since digital titles rake in higher margins (hello, PS Store)