44

78.  And I now refuse to buy a PC game at brick and mortar.  If it ain't on Steam or Impulse I'm not getting it.  Or the Blizzard store I guess. (looking at you Starcraft 2)

138 games, including whatever steam counts as my games like the free ones

125. i've probably beaten 5% of those. 
 
fucking Steam sales man

96 games apparently
http://steamcommunity.com/id/Bowley/
 
Worst purchase for the money: Star Trek Online ($60, ugh)

111 Nice number :)
I bought most games when they were "cheap". Hardly buy games for full price (cause most of the times the stores are 10,- cheaper).

My Gog.com library is bigger than my Steam library sadly.  Gog has 4 games, Steam has 3.  My computer sucks.   Hell even the last Gog.com game I bought can't run on my system. 

Not including all the Valve stuff, and I mean I have it all, like 6 games.  I am not a huge fan of digital distribution, mostly because of DRM issues and having to make sure you are online.  And for those 6 games I have bought, they were all Steam deals.  I didn't buy one at full price.

Just Tochlight, and I wouldn't even have that if it weren't on sale for $5 back in December.

I've got a whopping 9 games on Steam, excluding demos.  I buy games that are on super-sales that I've been thinking I wanted to buy anyway, or games that manage to be cheap without being on sale.  I think I originally installed it with Portal, and my first purchase was Peggle after I saw it was the cheapest way to get the game after I saw a friend playing it (it looked fun -- and it's pretty fun for something so simple).  

From there, the Steam sales sometimes catch my eye, or I'll find a demo that's so fun I keep going back to it until I decide to just buy the darned game.

I'm not very comfortable with "Digital Distribution".  I don't like using my credit cards online, and I dislike any service that I feel could potentially sever me from my games.  If I spend good money on my game, I don't think anyone should be able to take it away from me (disallowing me from using a public multiplayer feature is a little different than disallowing me to play at all).  I'm uncomfortable with the prospect of somehow being banned.

159

Eh, I don't have that much on Steam. 
 
I'd say I have around or slightly over 20 full games on it... 
 
The vast majority of my steam catalog is a few demos and TONS of single-player half-life 2 mods my brother has downloaded.

I only have 29 games, Portal from when it was free that one time, and the QuakeCon pack

54

17? I really don't spend much time on Steam honestly. Plus until recently, I couldn't run too much on my PC, so my options were really limited.

KOTOR and Deus Ex. REALLLLLLY thinking hard about Civ 4.....

"96 games apparentlyhttp://steamcommunity.com/id/Bowley/  Worst purchase for the money: Star Trek Online ($60, ugh) "

38

I have 30 games now. Here is a screenshot I took the other day for something else.

50. I thought I had more. But like many others in this thread I mainly buy of those crazy sales.

45. My most recent purchase was Fallout 3: GOTY, just for the DLC.

" 124 according to my community page. I love it. Steam is solely responsible for my current PC gaming habits.  Not sure why my Civ 4 and expansions show up twice. I hope I didn't buy that pack twice... (edit: one is http://store.steampowered.com/app/3900/ and the other is http://store.steampowered.com/app/34440/ that forwards to 3900. weird.) "

55. I only buy them when they're on sale :P

Steam Community says 135, though I noticed some doubles because of Steam Play. Maybe 125?

104 baybee.

80! I wish every form of Digital Distribution was like steam, its convenient, has great sales, and having everything tied to your account is excellent.  

166 currently, probably will be more by next weekend after another crazy sale.

50 something

97. The funny thing is that I hate PC gaming (with a few exceptions, WoW and Starcraft being the biggest of them).

I have 50 games on Steam, according to my profile. I have more PC games that are disc or download from other locations that aren't recognized by Steam as owned. Like World of Goo <3

73, not much.

LIke 4. And Im not even sure they work on mac.

I still prefer buying boxed games, but Steam sales are irresistible. I have 6.

Only been using steam for a couple months, other than borrowing accounts for Half-Life and stuff. But due to sales, I already have a couple dozen games. Like... 4 of which I ever really play.

"97. The funny thing is that I hate PC gaming (with a few exceptions, WoW and Starcraft being the biggest of them)."

saw an earlier post do this so i thought i'd do it too.

I have 42 games on Steam. Last one I bought was Singularity.

82, but I have a lot of PC games that I wish I had bought through Steam...

" None.  Boxed games ftw! "

372 games in my library, but only 73 of them Steam Games

71

and about 12 from GOG.com

Closing in on 300 games redeemed through Steam.

I run about 100 non-Steam games through Steam on top of that.