Although there are plenty of deals this weekend, there's probably not much you haven't seen before if you monitor game sales regularly, barring perhaps a 50% discount on Dark Souls: Prepare to Die Edition at Amazon as well as 33% off plus free weekend access to Counter-Strike: Global Offensive at Steam. Elsewhere, you'll find leftovers from last week's Halloween sales, particularly at GamersGate, and up to 75% off select military shooters at GameFly, space-themed games at Green Man Gaming and Assassin's Creed titles at Get Games (including an Assassin's Creed III preorder for $38.49).
Steam
86
Counter-Strike: Global Offensive $9.99 (33% off – free weekend)
77
Killing Floor $4.99 (75% off)
78
Tomb Raider: Underworld $4.99 (75% off)
Tomb Raider: Anniversary $2.49 (75% off)
Tomb Raider: Legend $2.49 (75% off)
Defender's Quest: Valley of the Forgotten $9.99 (33% off)
Trains vs Zombies 2 $8.99 (50% off)
A Virus Named TOM $4.99 (50% off – today only)
Tripwire Interactive Bundle $14.99 (75% off)
More...
Amazon Digital
83
The Walking Dead $14.99 (40% off)
93
Mass Effect 2 $7.00 (65% off)
76
Supreme Commander 2 $4.99 (67% off)
Dark Souls: Prepare to Die Edition $19.90 (50% off)
More...
GamersGate
83
Alan Wake $14.98 (50% off)
Penumbra Collection $5.00 (75% off)
70
NecroVision $3.89 (70% off)
61
NecroVision: Lost Company $5.99 (70% off)
81
Metro 2033 $4.99 (75% off)
73
F.E.A.R. Complete Pack $7.50 (75% off)
74
Dead Island $7.48 (50% off)
86
Amnesia: The Dark Descent $4.99 (75% off)
89
Dead Space Complete Pack $9.99 (75% off)
74
Dark Fall: Lost Souls $2.49 (75% off)
58
Alone in the Dark $2.49 (75% off)
73
S.T.A.L.K.E.R. Clear Sky $2.49 (75% off)
81
S.T.A.L.K.E.R. Call of Pripyat $6.48 (50% off)
S.T.A.L.K.E.R. Shadow of Chernobyl $4.99 (75% off)
66-70% off Splinter Cell titles
More...
GameFly
72
Alice: Madness Returns $4.99 (75% off)
77
The Darkness II $7.49 (75% off)
68
Sniper Elite V2 $24.99 (50% off)
75
Spec Ops: The Line $14.99 (50% off)
74
Operation Flashpoint Dragon Rising $9.99 (75% off)
74
Ghost Recon: Future Soldier $23.99 (40% off)
77
Red Orchestra 2: Heroes of Stalingrad $9.99 (50% off)
75
Medal of Honor: Ultimate Digital Collection $11.99 (60% off)
50
Global Ops Commando Libya $7.49 (75% off)
Demigod $2.49 (75% off)
Vampire: The Masquerade - Bloodlines $4.99 (75% off)
Painkiller $1.25 (75% off)
More...
Green Man Gaming
73
Armada: Gold $7.99 (60% off)
Gemini Wars $15.99 (60% off)
85
Red Faction: Guerilla $4.99 (75% off)
71
Red Faction: Armageddon $4.99 (75% off)
Space Pirates and Zombies $3.73 (75% off)
Star Ruler $5.99 (60% off)
60
Starpoint Gemini $9.99 (60% off)
74
Unstoppable Gorg $2.49 (75% off)
81
Warhammer 40k: Dawn of War II - Retribution $7.49 (75% off)
87
Warhammer 40k: Dawn of War II - Chaos Rising $4.99 (75% off)
79
Warhammer 40k: Space Marine $7.49 (75% off)
88
Waveform $3.49 (50% off)
Earth 2160 $3.49 (50% off)
Galaxy on Fire 2 Full HD $9.99 (50% off)
J.U.L.I.A $9.99 (50% off)
Nexuiz $2.49 (75% off)
ORB: Off-World Resource Base $4.99 (50% off)
Red Faction $2.49 (75% off)
Rochard $4.99 (50% off)
SOL Exodus: Collector's Edition $5.99 (60% off)
Space Empires IV Deluxe $4.99 (50% off)
Space Empires: Starfury $4.99 (50% off)
Stellar Impact $4.99 (50% off)
Supreme Commander $4.99 (75% off)
UFO Extraterrestrials Gold Edition $3.73 $(75% off)
25% off most digital games via coupon code "GMG25-UAAHK-6AI9S"
More...
Get Games
90
Batman: Arkham Asylum GotY $4.99 (75% off)
92
Batman: Arkham City $9.99 (50% off)
84
Lego Batman $8.99 (55% off)
85
Lego Batman 2 $10.49 (65% off)
79
Lego Harry Potter: Years 1-4 $8.99 (55% off)
76
Lego Harry Potter: Years 5-7 $5.25 (65% off)
Far Cry Bundle $6.25 (75% off)
Up to 75% off Assassin's Creed titles (ACIII preorder for $38.49)
More...
GameStop
85
Saints Row: The Third $13.59 (66% off)
75
Blood Bowl Legendary Edition $19.99 (50% off)
More...
GOG
60% off many EA titles
30-40% off Deponia titles