Spring sales are underway with various digital distributors taking a hacksaw to prices. Amazon offers 50-83% off titles including The Darkness II, L.A. Noire, Crysis 2 and Saints Row: The Third, GameFly cuts 33-75% off both Rocksteady Batman games, Alan Wake, Deus Ex: Human Revolution and Modern Warfare titles, while Green Man Gaming slashes 50% off F.E.A.R. 3. Also of special note, GOG offers the original Fallout (circa 1997) completely free of charge.

Steam
70 Age of Empires: All in Wonder Bundle $16.99 (66% off)
81 Vessel $11.99 (20% off)
86 Cthulhu Saves the World & Breath of Death VII $1.49 (50% off)
Magic 2012 Gold Game Bundle $3.39 (66% off)
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Amazon Digital
77 The Darkness II $12.49 (75% off)
87 L.A. Noire $4.99 (83% off)
79 Dragon Age Pack $9.99 (80% off)
86 Crysis 2 $7.49 (75% off)
79 Metro 2033 $4.99 (75% off)
75 Serious Sam 3: BFE $12.00 (70% off)
75 Warhamamer 40k: Space Marine $9.99 (67% off)
71 The Saboteur $4.99 (75% off)
79 Shift 2 - Unleashed $4.99 (75% off)
75 Magicka Collection $6.00 (70% off)
83 Saints Row: The Third $24.99 (50% off)
71 Red Faction: Armageddon $4.99 (75% off)
88 Battlefield 3 $39.99 (33% off)
87 Mass Effect 3 $49.99 (17% off)
81 Kingdoms of Amalur: Reckoning $39.99 (33% off)
S.T.A.L.K.E.R.: Shadow of Chernobyl $4.99 (75% off)
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GameStop
75 Two Worlds II $14.99 (50% off)
80 The Chronicles of Riddick: Assault on Dark Athena $9.99 (50% off) 
67 Test Drive Unlimited 2 $9.98 (50% off)
44 Stronghold 3 $19.99 (60% off)
Crysis $4.99 (75% off)
Total Annihilation $4.99 (50% off)
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GamersGate
73 Cities in Motion Collection $13.58 (66% off)
74 33% off Lego Mac games
86 50-75% off Sims content
75 60% off Serious Sam titles
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GameFly
90 Batman: Arkham Asylum GotY $4.99 (75% off)
90 Batman: Arkham City $14.99 (50% off) 
83 Alan Wake $20.09 (33% off)
88 CoD: Modern Warfare 2 $9.99 (50% off)
81  CoD: Modern Warfare 3 $40.19 (33% off)
62 Gotham City Imposters $7.49 (50% off)
87 Deus Ex: Human Revolution $10.19 (66% off)
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Green Man Gaming
72 F.E.A.R. 3 $7.68 (50% off)
66 Alter Ego $12.47 (50% off)
84 Rift $9.95 (50% off)
GTA: Vice City $2.49 (75% off)
The Rockin' Dead $12.47 (50% off)
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Games for Windows
81 Osmos $4.99 (50% off)

GOG
Fallout (free)
50% off Might & Magic titles