'Portal' on a graphing calculator - video

Portal has been replicated on a graphing calculator.

Programmed using Axe, a language designed for Texas Instruments graphing calculators, Portal Prelude is a playable 2D game inspired by a Flash clone popularised on the internet.



The fan project was undertaken by Builderboy2005 and was finished earlier this month.

"Long before GLaDOS ever ran the facility, step into the shoes of a test subject and test the Aperture Science Handheld Portal Device (ASHPD) for yourself!" reads the game description on Omnimaga.

"Test your way through 38 devious test chambers using Portals, in addition to many other intriguing gameplay elements such as plasma balls and electric fields."

The critically-acclaimed Portal series is developed by Valve and has seen releases on PC, Mac, Xbox 360 and PlayStation 3.

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