#17 - Grand Theft Auto V
I haven't quite completed it yet, but I still know it deserves a place on this list. It's better than its predecessor in every way and Lost Santos is one of the most incredible and immersive worlds I've seen in a game. The best thing about this game though is its humour, and the way in which it parodies real life, most notably the game's own version of Facebook, "LifeInvader", and the absolutely hilarious radio advertisements. The game is visually stunning, its lighting and draw distance is quite possibly unmatched by any other console game. This game mostly fixed one of my biggest gripes with the series, too many missions that all feel the same. Luckily Grand Theft Auto V's story mode (or what I've played of it) is short and varied.
Hint for #16:
Edge. Undo.