There are tons of deals this weekend, but they're mostly repeats from recent months. Taking advantage of Black Ops II's hype, Amazon has reduced the original by 33% to $26.79. Meanwhile, in celebration of Morrowind's 10th anniversary, GameStop offers Morrowind and Oblivion for free when you purchase Skyrim at full price ($59.99). If you just want the older TES titles, both are available for 50% off on GameStop and Steam. Lastly, EA's Indie Bundle offers six titles for $20, including four with local co-op, which is somewhat of a rarity these days.

Steam
92 Batman: Arkham City $14.99 (50% off)
90 Batman: Arkham Asylum GotY $6.80 (66% off)
74  Sanctum Collection $5.00 (75% off + free weekend)
EA Indie Bundle $20.98 (70% off)
TES III: Morrowind $9.99 (50% off)
TES IV: Oblivion $12.49 (50% off)
Gatling Gears $4.99 (50% off)
Titan Attacks! $2.49 (50% off – today only)
More...

Amazon Digital
90 Deus Ex: Human Revolution $6.99 (77% off)
67 Dungeon Siege 3 $4.99 (75% off)
88 Battlefield 3 $39.96 (33% off)
87 Civilization V $14.99 (50% off)
53 Final Fantasy XIV $9.99 (50% off)
88 Mass Effect 3 $39.99 (33% off)
82 Mount & Blade: Warband $9.99 (50% off) 
82 Call of Duty: Black Ops $26.79 (33% off)
76 Supreme Commander 2 $5.86 (61% off)
78 Tropico 4 $19.99 (50% off)
More...

GameStop
86 Lord of the Rings Online: Mithril Edition $14.99 (50% off)
71  Lord of the Rings: War in the North $9.99 (50% off)
92 Batman: Arkham City $14.99 (50% off)
90 Batman: Arkham Asylum $4.99 (75% off)
87 Civilization V $14.99 (50% off)
78 Magicka Collection $4.99 (75% off)
67 Aliens vs. Predator $4.99 (75% off)
80 Driver: San Francisco $10.19 (66% off)
78 From Dust $7.49 (50% off)
88 Assassin's Creed: Brotherhood Digital Deluxe Edition $13.59 (66% off)
More...

GamersGate
90 Total War: Shogun 2 $7.49 (75% off)
84 Napoleon: Total War Imperial $9.98 (50% off)
89 Empire: Total War $9.98 (50% off)
67 Alpha Protocol $9.98 (50% off)
83 Sonic Generations $14.98 (50% off)
76 Hearts of Iron Complete $26.99 (70% off)
Condemned - Criminal Origins $7.48 (50% off)
Rome: Total War Compete $7.48 (50% off)
Medieval 2 Total War Gold Edition $4.98 (50% off)
Virtua Tennis 4 $9.98 (50% off)
Renegade Ops $7.50 (62% off)
More...

GameFly
77 Assassin's Creed Revelations $24.99 (50% off)
{pf id: size:small} Up to 75% off Kalypso titles

Origin
76  Two Worlds II - Velvet GotY Edition $19.99 (50% off)

Green Man Gaming
50-75% off Paradox Interactive titles

GOG
50% off Rebellion titles