I could have sworn there was a bug about this already, but I couldn't find one...
We still don't have the full screen patch in portage as mentioned in http://gentoo-wiki.com/HOWTO_ROTT
works like a charm on my x86.
Steps to Reproduce:
I would classify this as minor severity, rather than enhancement. full screen for this game is supposed to be there in the first place.
rott version 1.1 is out, and has working fullscreen support.