The purpose of Virtual BLOXCon was, as stated by the ROBLOX team,
Only a small fraction of ROBLOXia’s population had the opportunity to attend the sold-out BLOXcons in person this summer. As much as we’d like to show up in every town and throw a live BLOXcon for you and your friends, we haven’t yet mastered the technology or hired the couple thousand minions we’d need to make that possible. Instead, we’re going to show up via the series of tubes that are The Internet on Saturday, September 21st for a virtual BLOXcon!.
The event started roughly at 9 a.m. Pacific Time. ROBLOX players from all over the world could watch the Virtual BLOXcon 2013, and play with featured staff members.