The latest release of the SGE can be downloaded from PyPI:
For extra features, you can download the various xSGE packages. Please note that unlike the SGE itself, the xSGE packages are distributed under the terms of the GNU General Public License, which means games that use it can only be released under a GPL-compatible libre open source license. If you wish to use xSGE for a proprietary or closed-source project, please contact me; I am willing to grant exceptions on a case-by-case basis.
The latest releases of the xSGE packages can be downloaded from PyPI: