Number of active participants in the thread: 25
Number of different game titles completed: 162
Number of completions reported: 221
(Multiple completions of a single game by a single person were counted as only one completion.)
Game Completions by Platform
(For platform-exclusive games or when you indicated the platform)
Game Titles by Genre
Game Titles by Release Year
Oldest games: Fallout and Fallout 2
Sequels vs. Nonsequels
Game Titles by Metacritic Rating
Highest-rated games: Bioshock and Uncharted 2 (96)
Lowest-rated game: Ghostbusters: Sanctum of Slime (43)
Game Titles by Developers' Countries
Noted 2012 Releases We Didn't Report Completing
(I tried to edit this list down to "finishable" games that OOers would be interested in.)
2012 was a year. Games were played in it.