Doorways: Old Prototype is a short game created before the development of Doorways: Prelude, the first episode in the Doorways saga.

This version was built between late 2011 and early 2012.

It’s an early prototype made to show the main features of the game.
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Doorways is an episodic game, it's divided in three parts and they can be played separately:

Doorways: Prelude (Chapter 1 & 2):

http://store.steampowered.com/app/248470/
Doorways: The Underworld (Chapter 3):

http://store.steampowered.com/app/311250/
Doorways: Holy Mountains of Flesh (Chapter 4):

http://store.steampowered.com/app/383930/