This week has been quite the interesting one for those looking forward to Sonic the Hedgehog 4: Episode 2. Without the teasing of weeks of teasing announcements, a playable build of the game shows up out of nowhere in Barcelona, subsequently played by people who apparently have never touched a videogame in their life. The offical English homepage of the game was updated. And of course, even though it doesn’t seem nearly as vital any longer, another round of concept art was uploaded onto Sega’s blog and Facebook page. So, without further ado, let’s jump head first into the madness.