Fallout 3 is no S.T.A.L.K.E.R. but I find it enjoyable. However S.T.A.L.K.E.R. doesn't make the immersion breaking mistakes F3 does, it's also more attractive.
I was referring to the movie Stalker moreso than the game S.T.A.L.K.E.R., though the game would also be an example of the kind of environment i prefer (though not as much as the movie).
I haven't gotten really deep into Eufloria. I approach it like a casual game. I do find it relaxing. I heard a more recent patch they made the game faster and more difficult, though you can set it to the old version.
Perhaps that's why. I'll see if I can do that. (Or perhaps I just suck.)
Edit: Ok, so took another shot at Eufloria. Turns out it was just me who sucked. I did much better now.
I've also been playing Picross 3D, which is quite a charming puzzle game. It's essentially nonograms in 3D. However, it does the thing I hate most in puzzle games: it has a timer. I want puzzle games to be thoughtful and relaxing, not stressful.
On recommendation of some random Internet-acquaintance I've been playing 999: 9 Hours, 9 Persons, 9 Doors. It pisses me off to no end with all its pure and utter bullshit (that it somehow tries to pass off as science), bland characters and ridiculous story.