Although I don't have alot of experience with all of the consoles this generation, I will use my thoughts as well as experience to answer this one.
Gears of War (Xbox 360):
This game basically made everyon stand up and notice the difference between the last generation and this one by utilising noticeably much better graphics.
Wii Sports (Wii):
With the launch of the Wii came Wii Sports, this is the game that has brought everybody from all walks in life together to play tennis, bowling etc. People normally not bothered by video games were hit over the head and dragged into the 21st century to enjoy some easy play, easy interactive gaming of the next generation.
Uncharted: Drake's Fortune (PS3):
What Heavenly Sword started on the PS3, Uncharted completed. Truely next gen gameplay, visuals and true movie style interaction. This game brought all these elements together to create the closest to interactive movies done so far. The visuals have pushed this title to the very top of this generation so far.
Prediction (June 12th 2017)
Permanent pricedrop for both PS4 Slim and PS4 Pro in October.
PS4 Slim $249 (October 2017)
PS4 Pro $349 (October 2017)
