World of Warcraft? Fear not, as more
Another group of realms is slated for connection but does not currently have a timetable, although one of the slated connections (Anvilmar and Undermine) is currently on hold due to undisclosed technical issues. The addition of new realms means more people to play alongside, so for lower-population servers these merges can't come fast enough. Check out the official post for the full list of realms being merged.