Currently playing "Singularity" for the second time (first time at release some 7 years ago) and I'm still loving it.
And I know what I miss most nowadays: A great first person shooter like "Singularity" and others like it.
What a shame that not even Raven Software (the FPS gods) are making them anymore but have to do slave work for COD. What a waste.
Well at least we have Bethesda. Last couple of year they are killing it with singleplayer FPS games.