Portal 2 is 50% off on Steam.

http://store.steampowered.com/app/620/

This covers multiple sites, despite its name.

 http://www.steamgamesales.com/

Ah - I just post deals randomly in their own thread when I find em.  I'll use this.

Shogun 2 is $7.50 on Steam:

http://store.steampowered.com/app/34330/

And this site also covers multiple sites, and is searchable by site, genre, price, etc,:

http://www.deals4downloads.com/#/f/gp__pc--pst__coregames/s/hot/page/1

Impulse is doing Neverwinter Nights 1 and 2 and all expansions for $7.50.   And that's got good reviews. 

Then again, I got this same thing for $2 at a garage sale and have yet to open it.        LOL.

Trine 2 on sale on steam for 50% off.  $7.49.  84/100 on metacritic.

Some super good deals.  Check this stuff out.

1st is a freebee - the original fallout is free at GoG

http://slickdeals.net/permadeal/72052/gog-free-fallout-classic-pc-digital-download?token=AAkBBQAAAAAFOz-woA

2nd is a HUGE sale on amazon for pc game downloads.  I picked up the darkness 2 for like $12 and that majesty tower defense game for like $5 or.  Huge list.  The thread shows all the details on where you can activate the games, etc.

http://slickdeals.net/permadeal/71980/amazon.com-pc-digital-download-games-the-darkness-ii-12.50-dragon-age-pack-10-grand-theft-auto-iv-5-l.a.-noire-5-crysis-2-7.50-serious-sam-the-random-encounter-1.50?token=ACEBBQAAAAAFOz-GXg

And last - Catherine for Ps3 is on sale for $30 at Amazon - just do a quick search.

Oh shit Pacov, that list has Crusader Kings 2 for $18!  Yay!

+1 pacov- seriously 18$ for Crusader kings 2 I was on the fence but thats a steal! 

Glad you fellas checked it out (and sorry I didn't mention that one - good call out!).

The deal on crusader kings 2 ends on like 4/8 - so pick it up if you want it very soon.

New 1 - GoG has interplay games at 50% off this weekend.  Quite a few gems here.  That's your early fallout games and one of my fav's from back then - shogo for like $3!  There's freespace 1/2, messiah (interesting game) , and sacrifice to call out a few.  Anyway, take a look!

http://www.gog.com/promo/interplay_blast?utm_source=newsletter&utm_medium=email&utm_content=game_subject&utm_campaign=interplay_blast

 edit.. and descent... and redneck rampage... and...

If you want a lot of games, check out the 1C complete pack over at gamersgate.  80 games for 21 dollars (and if you got in on that 15% for life discount with an IGN prime signup, its only about 18 bucks).  Been up all week, so I'm guessing it'll end Sunday night, but just saw this today.

http://www.gamersgate.com/DDB-1CBIGPACK/1c-complete-pack-bundle

Highlights in the pack (to me) include Space Rangers 1+2 (and Reboot - great game if you've never tried it), all of the Kings bounty series, all of the Men of War series through Vietnam expansion, UFO Afterlife series, Star Wolves series, and Fantasy Wars.

A lot of stuff I'd never play as well, but heck if you're wanting a bunch of games to tide you through a slow time in releases, $0.40 per game isn't bad.  If you wanted to go really cheap, and you review the games on the site you'd even get more back in bluecoins (Between 5-25 cents worth per game), but probably unnecessary at the low cost.

@FallingStar: The Kings Bounty series alone is enough to buy that pack. I have spent countless hours on that series. It has better tactical battles than Heroes VI, Fallen Enchantress, Disciples and other games with similar tactical battles. Go for it people.

Nekro

Mix of Overlord (closest IMO), Dungeon Keeper and Diablo 2.

There are gawdawfully few games where you can root for evil. =P

It's not quite done, yet, but you get it for 15 bucks, so I guess it qualifies for bargain.
It's "working" as an alpha but lots of content is left to do... and content costs money because good artists work for a living - not for free.