Quote Originally Posted by Darkhog View Post
MPL doesn't require you providing source code. GPL does. With MPL you only need to provide changes you made to engine's code (if you did), not actual game code.
MIT license i use for nxPascal doesn't have even that requirement, if he wishes to start new engine based on mine, it is his right to do so.
http://opensource.org/licenses/mit-license.php