Weekend game deals: Brink $5, Arkham City $15, Sniper Elite $2.50

Both of 2011's most popular military shooters are on sale, with Steam offering Modern Warfare 3 for $39.99 (plus free access this weekend) and GamersGate cutting Battlefield 3 to $29.98 as part of an EA sale which also includes 40% off Kingdoms of Amalur: Reckoning and Syndicate. Meanwhile, GameStop slashes 50% off both Rocksteady Batman titles as well as Assassin's Creed Revelations, Amazon cuts 75% off Crysis, and GameFly knocks 75% off Brink and Sanctum.

Steam
83 Call of Duty: Modern Warfare 3 $39.99 (33% off + free weekend)
Sniper Elite $2.49 (75% off)
The Cursed Crusade $14.99 (50% off)
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Amazon Digital
77 King's Bounty: Platinum Edition $5.00 (86% off)
72 Penumbra $5.00 (50% off)
87 Civilization V $14.99 (50% off)
88 Deus Ex: Human Revolution $9.99 (67% off)
85 Crusader Kings II $19.99 (50% off)
71 Cryostasis $5.00 (62% off)
Crysis $4.99 (75% off)
UFO Trilogy $5.00 (75% off)
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GameStop
90 Batman: Arkham City $14.99 (50% off)
90 Batman: Arkham Asylum $4.99 (50% off)
76 Magicka Collection $4.99 (75% off)
79 The Lord of the Rings Online: Mithril Edition $14.99 (50% off)
69 Lord of the Rings; War in the North $9.99 (50% off)
50 Final Fantasy XIV $9.99 (50% off)
Age of Empires III: Complete Collection $19.99 (50% off)
67 Aliens vs. Predator $4.99 (75% off)
74 Majesty 2 Collection $4.99 (50% off)
76 Assassin's Creed Revelations $24.99 (50% off)
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GamersGate
88 Battlefield 3 $29.98 (50% off)
89 Mass Effect 3 $47.96 (20% off)
81 Kingdoms of Amalur: Reckoning $35.97 (40% off)
74  Syndicate $35.99 (40% off)
Spore $6.78 (66% off)
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GameFly
74 Brink $4.99 (75% off)
73 Sanctum $3.74 (75% off)
70 Dungeons: The Dark Lord $14.99 (50% off)
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Green Man Gaming
69 Still Life 2 $7.99 (60% off)
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GOG
50% off select EA titles