A YouTube video uploaded by an account named Chance Rides and featuring a digital roller coaster simulation briefly popped up on theme-park forum boards last week, boasting the description: “Adventuredome Family Twister - Mine Train Family Coaster.” It suggests a leak—and a possible fourth coaster at the Circus Circus park, despite sorta-denials. “An unlisted video was shared previously without the permission of Chance Rides or Adventuredome and no agreement has been reached on a new coaster for them,” says a Chance rep, while one for MGM Resorts says there are currently no new ride announcements. Adventuredome is currently clearing out the area once occupied by the Rim Runner water flume. Hmm ...