Celebrating QuakeCon 2012 (August 2-5), distributors have discounted Bethesda and id titles, with Steam hosting a new daily deal through Sunday. Valve also serves up a $99.99 QuakeCon Pack that includes content across franchises such as Doom, Fallout, Hexen, Quake, and The Elder Scrolls, as well as various individual titles like Rage and Brink along with a bundle of Team Fortress 2 cosmetics. Elsewhere, you'll find decent deals on 2K titles including the Mass Effect and Dragon Age series, 75% off The Darkness II and 66% off The Witcher: Enhanced Edition.

Steam
76 Rage $9.99 (50% off -- today only)
81  Vessel $4.99 (67% off)
Titan Quest Gold $4.99 (75% off -- today only)
Quakecon Bundle $99.99 (78% off)
More...

Amazon Digital
77 The Darkness II $12.49 (75% off)
81  Tropico 3 $4.92 (51% off)
78 Tropico 4 $19.99 (50% off) 
71 Alice: Madness Returns $13.16 (34% off)
More...

GameStop
51 Final Fantasy XIV $9.99 (50% off)
70 Lord of the Rings: War in the North $9.99 (50% off)
74 Dead Island $14.99 (50% off)
75 Supreme Commander 2 $4.99 (66% off)
82 Bejeweled 3 $9.99 (50% off)
D&D Ultimate Pack $17.99 (60% off)
More...

GamersGate
80 Risen $4.99 (75% off)
75 Two Worlds 2 $14.98 (50% off)
82 Mafia II $8.98 (70% off)
90  Mass Effect $6.78 (66% off)
93  Mass Effect 2 $6.78 (66% off)
86 Mass Effect 3 $29.98 (50% off)
90 Dragon Age Origins Ultimate Edition $14.98 (50% off)
90  The Witcher: Enhanced Edition $3.40 (66% off)
86  BioShock 2 $6.78 (66% off)
84  Crusader Kings II Collection $24.97 (50% off)
Titan Quest Gold $3.99 (80% off)
Crusader Kings Complete $4.95 (50% off)
BioShock $6.78 (66% off)
More...

GameFly
78 Dragon Age II $5.00 (75% off)
79  R.U.S.E.: The Art of Deception $5.00 (75% off)
80  Wings of Prey $5.00 (66% off)
Company of Heroes: Opposing Fronts $5.00 (75% off)
Counter-Strike: Condition Zero $5.00 (50% off)
More...

Green Man Gaming
71 Nuclear Dawn $9.00 (49% off)
Dwarfs!? $2.49 (75% off)
Red Orchestra: Ostfront 41-45 (49% off)
Arcania $6.80 (65% off)
Arcania: Fall of Setarrif $5.10 (65% off)
Spellforce: Platinum $3.40 (65% off)
Spellforce 2: Gold $6.78 (65% off)
More...

GOG
50% off TopWare titles