Elephants Dream (code-named Project Orange during production and originally titled Machina) is a 2006 Dutch animated science fiction fantasy experimental short film produced by Blender Foundation using, almost exclusively, free and open-source software.

An old man, Proog, guides the young Emo through a giant surreal machine, in which the rooms have no clear transition to each other.

Emo asks to go through the door, but Proog insists that it is unsafe, and presses a button within his cane to enclose them both in a smaller room.

Emo mockingly imitates Proog's earlier tour to demonstrate the machine's absurdity and manifests the twisted versions of the Hanging Gardens of Babylon (in the form of mechanical roots) and the Colossus of Rhodes (in the form of gigantic hands), which threaten to destroy Proog's constructed world.

The primary piece of software used to create the film was Blender; other programs used in production include DrQueue, Inkscape, Seashore, Twisted, Verse, CinePaint, GIMP, OpenEXR, Reaktor, Subversion, Python, Ubuntu, GNOME, and KDE.

[3] The primary purpose of the project was to field test, develop and showcase the capabilities of Blender, demonstrating what can be done with the software in organizing and producing quality content for films.

[4] The bulk of computer processing power for rendering the film was donated by the BSU Xseed, a 2.1 TFLOPS Apple Xserve G5-based supercomputing cluster at Bowie State University.

[11] The stereoscopic version was rendered in Digital Cinema Package (DCP) 2K flat resolution, with a slightly wider aspect format which required adjustment of the camera lens parameter in every shot.

Many scenes in the original production files used flat 2D matte paintings which were integrated into the rendered images during the compositing phase.