Not to minimize the accomplishment, but most of those "first time on Linux!" titles were previously playable via Dosbox, or free software source ports. That said, can't wait for Rollercoaster Tycoon.
I don't think it's the technical accomplishment that's significant - more the fact that producers are increasingly recognising Linux as an emerging gaming platform.
I agree. I should have said something more like "diminish their efforts" rather than "minimize their accomplishment". My point is the marketing claim that these titles are appearing on Linux for the first time is a stretch.