A new video shows Portal's evolution -- across many early builds -- from the student game Narbacular Drop to the polished Valve hit it ultimately became.
A new video put together by Valve News Network -- a YouTube channel devoted to the games of the Seattle-based developer -- delivers a comprehensive, behind-the-scenes look at the evolution of the original Portal, from its genesis as student project Narbacular Drop through a variety of iterations and on to the final game.
The video is cobbled together from a variety of early builds of the game, and offers an unusual look at the early days of such a high-profile game.
Hungry for more Portal? Gamasutra spoke to Kim Swift and Erik Wolpaw, the game's lead designer and lead writer, in 2008.
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