If you've missed the various THQ packs offered by the Humble Bundle, Steam and other outfits over the last few weeks, Amazon is serving up S.T.A.L.K.E.R.: Shadow of Chernobyl, Metro 2033, Homefront, Red Faction: Guerrilla and Armageddon, and Warhammer 40k: Space Marine for a measly $12, while Get Games has big discounts on various THQ titles. Elsewhere, Steam has Magicka with all of its DLC for $8.74 (with free access to check it out), GameStop has half off Civilization V, Dark Souls and more, GameFly offers the first and second Dead Space titles for $5 each, and Green Man Gaming has savings on Dead Rising 2, DmC 4, Resident Evil 5 and Lost Planet 2.

Steam
83 Anno 2070 $19.99 (60% off)
75 Magicka Collection $8.74 (75% off + free weekend)
Spectraball $2.49 (50% off)
Gateways $1.69 (66% off -- today only)
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Amazon Digital
75 THQ Pack $11.99 (91% off)
68 Need for Speed: The Run $8.99 (55% off)
88 Borderlands 2 $39.99 (33% off)
Rocksmith $14.99 (50% off)
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GameStop
87 Civilization V $14.99 (50% off)
85 Dark Souls: Prepare to Die Edition $19.97 (50% off)
77 Lego Lord of the Rings $9.99 (50% off)
82  Lego Batman 2 $14.99 (50% off)
86 Warhammer 40k Dawn of War II Complete $29.99 (50% off)
73 Warlock: Master of the Arcane Bundle $14.99 (50% off)
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GamersGate
78 Endless Space - Emperor Special Edition $17.48 (50% off)
World War 2 Time of Wrath $6.80 (66% off)
Storm Over the Pacific $10.18 (66% off)
Thief Collection $8.10 (70% off)
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GameFly
87 Dead Space $4.99 (75% off)
89 Dead Space 2 $4.99 (75% off)
Rush Bros. $9.95 (33% off)
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Green Man Gaming
79 Dead Rising 2 $4.99 (75% off)
81 Devil May Cry 4 $6.79 (66% off)
84 Resident Evil 5 $9.99 (50% off)
61 Lost Planet 2 $9.99 (75% off)
74  Unstoppable Gorg $2.49 (75% off)
90  Super Street Fighter IV $9.99 (75% off)
Asguaard $7.23 (75% off)
Death Road $3.74 (75% off)
Giana Sisters: Twisted Dreams $8.99 (40% off)
PID $5.99 (40% off)
Mud Motocross Championship $19.99 (50% off)
20% off via coupon code "GMG20-PJFEW-Y16HK"
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Get Games
83 Saints Row: The Third $9.99 (75% off)
72 Company of Heroes: Gold $7.49 (75% off)
82 Darksiders $7.49 (75% off)
78 Darksiders II $12.49 (75% off)
75 Warhammer 40k: Space Marine $7.49 (75% off)
Hotline Miami $4.94 (50% off)
Stealth Bastard Deluxe + Explodemon $9.99 (50% off)
Viking: Battle for Asgard $7.49 (50% off)
F.E.A.R. $2.70 (82% off) 
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GOG
60% off Blue Moon Red Owl titles