Castlevania: Harmony of Despair is a multiplayer-focused platform-adventure game in the Castlevania series, featuring an ensemble cast of characters from the 2-D Metroidvania era of games, developed and published by Konami for Xbox 360 in August 2010, and for PlayStation 3 in 2011.

The Electronic Entertainment Expo 2010 was the 16th E3 held. The event took place at the Los Angeles Convention Center in Los Angeles, California. It began on June 14, 2010, and ended on June 17, 2010, with 45,600 total attendees. There was also an E3 event held in Sony's PlayStation Home.