I didn't know much about the game, nor did I expect much either (thought it was just another stupid dudebro game), but bought it anyway when it was on a Steam sale about a month ago. And it surprised me, big time, I found the game to be extremely fun to play and is now easily among my favorite shooters since 2005 or so

The others would be the original FEAR and Bioshock. And I do look forward to fully play Binary Domain soon too, especially now as a patch been released to fix various PC port niggles.