This article is about the Christian seasonoun For other meanings, see Advent (disambiguation)

Advent (from the Latin Adventus, implicitly coupled with Redemptoris, "the coming of the Saviour") is a holy season of the Christian church, the period of expectant waiting and preparation for the celebration of the Nativity of Christ, also known as the season of Christmas. It is the beginning of the Western Christian year and commences on Advent Sunday. (The Eastern churches begin the year on 1 September.)

Colossal Cave Adventure (also known as ADVENT, Colossal Cave, or Adventure) (Crowther, 1976; Crowther & Woods, 1977) was the first computer adventure game. It was originally designed by Will Crowther, a programmer and keen caver, who based the layout on part of the Mammoth Cave system in Kentucky. The Colossal Cave subnetwork has many entrances, one of which is known as Bedquilt. Crowther reproduced portions of the real cave so faithfully that cavers who have played the game can easily navigate through familiar sections in the Bedquilt region on their first visit.