Game Closure DevKit
Game Closure offers two licensing options which are designed to be complementary, the GPLv3 and the Game Closure Free License (GCFL). These licenses allow you to have source code access to the DevKit, but still release proprietary games. You’ll never have to pay us any money to use the DevKit under either of these options.
For complete licensing information please refer to the license page of the Game Closure website.
The documentation for the Game Closure DevKit is licensed under the Creative Commons and allows you to copy, distribute, transmit, and adapt the work. This can be done under the conditions that you provide author attribution, use if for noncommercial purposes, and if you alter or build upon the work, you distribute the resulting work under the same or similar license at this one.