Automatic Games Installer for JDS Linux
Ricardo Wagemaker writes "GccInstaller is a automatic games installation software created to facilitated the installation of games on JDS Linux. Although still in development, with GccInstaller it will be easier to install games than it is to play them. Every time GccInstaller is launched it will check for a update and show you what the current version is, as well as a list of games available to Gccinstaller. Just select install and it will download patches to a temp area and install them on your local system."
Anyway check out IzPack if you need a good cross-platform installer.
A Multiplayer Strategy Game for Mac OS X, Windows, and Linux
Better looking game installer ;) and free (as in beer) for open source
Bitrock