The moment is there, we've had 49 great games. Before I'll post a hint for the #1, I'd like to take a moment to mention some other games that are also amazing in their own right, but couldn't make the list because, let's face it, 50 places isn't enough to mention them all!
My Honourable Mentions 2014:
Age of Empires, PC, 1997
Banjo-Kazooie, Nintendo 64, 1998
BioShock, PC, 2007
Donkey Kong Country, Super Nintendo Entertainment System, 1994
Fallout 3, PC, 2008
The Legend of Zelda, Nintendo Entertainment System, 1987
The Legend of Zelda: Skyward Sword, Nintendo Wii, 2011
Luigi's Mansion 2, Nintendo 3DS, 2013
Maniac Mansion II: Day of the Tentacle, Mac, 1993
Medieval II: Total War, PC, 2006
The Operative: No One Lives Forever, PC, 2000
SimCity 2000, Mac, 1994
Star Trek Voyager: Elite Force, PC, 2000
Star Wars: Shadows of the Empire, Nintendo 64, 1997
Super Mario 3D World, Nintendo WiiU, 2013
Super Mario Bros., Nintendo Entertainment System, 1987
Tekken 3, Sony PlayStation, 1998
Uncharted 3: Drake's Deception, Sony PlayStation 3, 2011
Virtua Tennis, SEGA Dreamcast, 2000
Warcraft III: Reign of Chaos, PC, 2002