Good news!
Apparently no media was released. As pointed out, there are already many free
engines. What might be more needed is freely licensed graphics and audio.
Like http://opengameart.org/
And then last but not least someone to put it all together.
Help building a catalog of games using free software and freely licensed
media assets at http://libregamewiki.org/
Or help listing free software in a semantic wiki at http://directory.fsf.org/
Free software and free culture are like a brain, the more interconnections
there are, the better it all works!