Blender Game Engine - Portal
Channel: Grissess Macookwee
Date: 2011-09-13

My take on Portal.
It hit me, one day, that Portal's magical portals could be implemented easily and efficiently using vector math and matrix manipulation, two topics I had touched on by using OpenGL.
So, six hours of solid development later, this happened. And at least one hour was devoted to getting the player movement right :P .
It should be WELL noted that this is NOWHERE near done. Some problems remain; many, like modelling, animations, and textures, are doable easily, but will take time; some, like getting objects to smoothly sit on portals, and implementing the famous Aperture Science Handheld Portal Device, will be coding challenges of the highest degree.

Created jointly in Blender 2.57 and ported to 2.59. http://blender.org/ -- I do not own, nor have I contributed to, this amazing development environment.