Lasting over a three-day weekend, for the first nine years of its existence it took place on the last weekend of January; for 2010, however, it was moved to mid-March to accommodate changes in Harvard College's academic calendar.
It has been described as the largest college-based science fiction convention in the United States.
The convention features anime, boardgames, cosplay, Human Chess, dances, LARPs, and RPGs.
The convention is unusual for a college science fiction convention in that in addition to gaming, a number of prominent people involved in the genres of science fiction, fantasy, game design, and comics are invited each year to host panels and readings.
Guests have included: This article about science fiction conventions is a stub.