BlizzCon first started in October 2005, held annually at the Anaheim Convention Center. It features announcements of new content for Blizzard's franchises, previews of content for upcoming games, developer Q&A sessions, PvP competitions and more.

This was Blizzard's 5th annual Blizzcon, held October 22-23 in sunny Anaheim, California at the Anaheim Convention Center. For those of you who may not know, Blizzard is responsible for the wildly popular Starcraft, Diablo and Warcraft franchises. Blizzard is so big they hold their own seperate convention packed across 4 halls.