IGIOS is the Finnish company specializing in 3D visualization and software porting that was contracted to port Shadowgrounds and Shadowgrounds: Survivor to Linux. These two action games were developed by Frozenbyte Studio, another Finnish company whose portfolio just consists of these two Shadowgrounds titles.
In Two PC Action Games Coming To Linux we shared all of the details on these two games coming to Linux. This was back in March and it was expected these games would be shipping in the spring time. That never happened and now we're almost through summer. However, this is what we heard this morning from IGIOS:
We are negotiating with our publisher, it seems to take a while cause of lawyers, but now we are getting it true. I'll inform you about the release and how to get gold master for testing as soon I know the details from publisher. Hopefully this will happen in week of two. I'm really sorry for this delay.
So it looks like Shadowgrounds and Shadowgrounds: Survivor may be released on Linux in the near future. At Phoronix we should have our copy soon, so expect more information.