Not all games are suited for touch screen devices such as Apple's iPads. Some on the other hand seem like they should have been made for them all along, and indie darling {Papers, Please} fits neatly into that category.
On that note, the tweet from the game's creator Lucas Pope earlier today came as no surprise. Writing only "December 12th" in his tweet, the whole "a picture is worth a thousand words" thing came into play.