Please test these experimental Linux builds of Revenge of the Titans 1.64! The Debian packages should install with a simple double-click and on a normalish installation you’ll get a shortcut in your apps menu under Games. They should be compatible with your existing Webstarted profile, too.
I’m afraid I haven’t got RPMs to work yet. There seems to be some buggery going on inside the Redline RPM creator I’m using from within Ant that causes the architecture to get wrongly specified.