Uplay started in 2009 with Assassin's Creed 2:
http://en.wikipedia.org/wiki/Uplay
Note that if you played these on a console you possibly had created a Ubisoft account to link to them for shit, it's not just a PC thing. Games:
Anno 2070
Assassin's Creed II
Assassin's Creed III
Assassin's Creed IV: Black Flag
Assassin's Creed: Brotherhood
Assassin's Creed: Multiplayer Rearmed
Assassin's Creed: Project Legacy
Assassin's Creed: Recollection
Assassin's Creed: Revelations
Avengers: Battle for Earth
Beowulf: The Game
Brothers in Arms: Furious 4
Call of Juarez: The Cartel
Driver: San Francisco
ESPN Sports Connection
Far Cry 3
Far Cry 3: Blood Dragon
From Dust
Just Dance 3 (Xbox 360 version only)
Just Dance 4
Might & Magic Heroes VI
Might & Magic Heroes VI: Shades of Darkness
Might & Magic X: Legacy
MotionSports
MotionSports Adrenaline
My Fitness Coach Club
Prince of Persia: The Forgotten Sands
PowerUp Heroes
Pure Football
R.U.S.E.
Rabbids Land
Raving Rabbids: Alive & Kicking
Rayman Legends
Shaun White Skateboarding
Silent Hunter 5: Battle of the Atlantic
The Adventures of Tintin: The Secret of the Unicorn
The Crew
The Settlers 7: Paths to a Kingdom
Tom Clancy's H.A.W.X. 2
Tom Clancy's Ghost Recon: Future Soldier
Tom Clancy's Splinter Cell: Blacklist
Tom Clancy's Splinter Cell: Conviction
Tom Clancy's The Division
Trials Evolution: Gold Edition
Toys'R'Us Towers
Watch Dogs
Your Shape: Fitness Evolved
Your Shape: Fitness Evolved 2012
Your Shape: Fitness Evolved 2013
ZombiU