M.GRL is made available to you as free software under the terms of the LGPLv3 or, at your option, any later version of the LGPL as published by the Free Software Foundation.

The javascript portion of the demos listed on this page have been dedicated to the public domain by way of CC0.

Some of the demos make use of art assets either from the Liberated Pixel Cup or are derrived from the Universal LPC spritesheet. Contributions to the Liberated Pixel Cup are dual licensed under the GPLv3 and CC BY-SA 3.0 licenses.

Original content (photographs and drawings in the first demo) are not part of the Liberated Pixel Cup, and are made available to you under the CC BY-SA 3.0 license.