Resident Evil 7 is the first full-length game to use Capcom's in-house RE Engine. The development was led by Koshi Nakanishi, director of the 2012 Nintendo 3DS game Resident Evil: Revelations. It was presented as a virtual reality demo, Kitchen, a year prior to its announcement at E3 2016, and supports the PlayStation VR headset. Resident Evil 7 was considered a return to form for the series; critics praised the gameplay, graphics, and design, but criticized the boss battles and the final chapter. The PlayStation VR version received positive reviews, with some criticism including decreased resolution and physical discomfort. As of December 2018, the game has sold over six million copies worldwide. Two downloadable content scenarios, Not a Hero and End of Zoe, were also released for the game.