The Ubuntu / Debian repository packages aren't yet up to date with the 4th Beta released on March 25, 2009. It also appears that the link on the official Globulation site for these distributions are broken, so I have setup a mirror of the packages.

1. Download the data .deb file and install with sudo dpkg -i glob2-data_0.9.4-1~getdeb1_all.deb.
   Get the data package
2. Download the application .deb file and install with sudo dpkg -i glob2_0.9.4-1~getdeb1_amd64.deb.
   Get the AMD64 version or Get the i386 version