Here is the story of portal and how Gabe Newell fell in love with a little project from a student named Kim Swift, the game that would become one of the world’s most popular and recognized title.

From Video Game Story Time on Youtube:

Valve’s series of Portal games are among the most iconic titles in all of gaming. The adventures of Chell, Wheatley, and GlaDOS, have become fan favourites for many players, as well as introducing loads of brand new fans to games for the very first time.

[Source: Video Game Story Time on Youtube]