The Steam version of Riven downloaded and installed cleanly using the
Steam GUI. Note that the graphics of this title are hardcoded to a
640x480 screen resolution, so keep that in mind. Sound and everything
else seems to work without any tweaks required. If you run in fullscreen
mode, press the left-Alt key to activate the ingame dropdown menu.
This is one of those titles the OSX display manager handles a little
better than in linux when using fullscreen mode -- you'll get the best
results in linux using a 4:3 aspect display capable of a native 640x480
resolution -- the graphics then look ok as they're correctly proportioned.
Silver for now until a little more gameplay gets done.
Cheers!