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The definition of Orthogonal Differentiation I use 12 seconds in is from here: http://virt10.itu.chalmers.se/index.p...
Tactical Breach Wizards is out now on Steam (with Overwhelmingly Positive reviews)! https://store.steampowered.com/app/10...
My video on the work I did on Alba: A Wildlife Adventure:    • Mini open world design in Alba: A Wil...  
Harvey Smith's GDC 2003 talk on "Orthogonal Unit Differentiation": https://slideplayer.com/slide/4321830/
Matthias Worch at GDC 2014 - Meaningful Choice in Game Level Design:    • Meaningful Choice in Game Level Design  

0:00 Intro
0:49 Defining orthogonal game design
2:11 Doom's orthogonal enemy design
4:03 Dishonored's orthogonal player ability design
4:59 Informed Simplicity
6:43 Left 4 Dead's orthogonal enemy design
8:02 Tactical Breach Wizards' orthogonal player and enemy design
9:33 Alba's orthogonal player ability design