It is the prereleased version - it is only available from the SVN-repository.
All links - http://freecode.com/projects/xlife
Subset of Xlife is also ported to the 8-bit world of retrocomputers.
The speed of these computers is about 100000 slower than modern desktops.
part1 (http://youtu.be/vIdGaYOMTcQ) - part2 (http://youtu.be/qnJmgkv4CcM)
The next links are to the versions without background music
part1 (http://youtu.be/EUQx0yjS0tw) - part2 (http://youtu.be/wMeCi4n67-E)