The Nook WiFi may have been rooted to play Angry Birds, but Kobu's competing eReader Touch Edition can apparently show off its gaming capabilities with factory settings. It turns out that aside from the Nook-like embedded web browser we uncovered in our review, the e-reader also comes pre-loaded with Sudoku -- perfect for some pattern deducing fun between reads. YouTube user codystheory has posted a video showing the quick sequence of taps needed to access the game