Steam says I own 354, however I think that it counts DLC and expacs as games so the real number is probably closer to 250ish.
Because finishing each game would probably take approximately ten billion years, my goal is to dump at least one hour into each game (more if I like it or it's engaging), post screenshots and the like, and talk about it. Then move on to the next one on the list.
Anyone interested?
Edit:
All right let's do it.
INDEX:
# - A
10,000,000
Age of Empires II HD
Airline Tycoon II
Alan Wake
Alien vs. Predator
Alpha Protocol
And Yet It Moves
Anomaly Warzone Earth
Antichamber
Aquaria
Archon: Classic
Assassin's Creed II
Atom Zombie Smasher
Avadon: The Black Fortress
Awesomenauts
B
Back to the Future
The Banner Saga
Bastion
Batman: Arkham Asylum
Batman: Arkham City
Beat Hazard
Ben There, Dan That!
Beyond Good and Evil
The Binding of Isaac
Bioshock Infinite
BIT.TRIP BEAT
BIT.TRIP RUNNER
BIT.TRIP PRESENTS RUNNER 2
BIT.TRIP VOID
Blackwell Convergence