known issues
the gui does not currently allow you to upgrade, remove, or download games (upgrade and remove however are currently implemented in command-line interface)
the gui does not display enough progress dialogs
only the English language is supported
there is no way to cleanly cancel out of a game install yet (need to kill a lot of processes manually)
on Debian-based systems, games can not be launched in a new x server until 'allowed_users=anybody' is added to '/etc/X11/Xwrapper.config'
this code is alpha, so there are many more, please report them