As part of its Activision sale, Steam has cut up to 75% off the publisher's releases as well as offering free multiplayer access to Call of Duty: Ghosts until Sunday afternoon. Valve's store also offers 75% off a pack of EA racing titles and a Serious Sam Pack, Amazon has assorted Eve Online offers, GamersGate is running a spring sale with Poker Night 2 for $0.99 among other bargains, GameFly has Max Payne 3 Complete for $8, while GMG and GOG are running Rockstar and Ubisoft promotions.

Steam
77 Star Wars Collection 2014 $33.99 (66% off)
77  Shadowrun Returns $5.09 (66% off)
75 Singularity $7.49 (75% off)
67 TimeShift $4.99 (75% off)
86 EA Racing Pack $19.99 (75% off)
79  Transformers: War for Cybertron $4.99 (75% off)
78 Transformers: Fall of Cybertron $14.99 (75% off)
75 Serious Sam Complete Pack $23.75 (75% off)
Tony Hawk's Pro Skater HD $4.99 (50% off)
Vampire: The Masquerade - Bloodlines $4.99 (75% off)
Gun $4.99 (75% off)
The Amazing Spider-Man $16.99 (66% off)
Up to 75% off Activision titles
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Amazon Digital
86 Football Manager 2014 $17.00 (66% off)
84 Eve Online: Explorer Super Starter Pack $4.99 (75% off)
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GamersGate
82 Chivalry: Medieval Warfare $12.50 (50% off)
81 Grid $5.08 (66% off)
88 The Walking Dead Pack $14.97 (50% off)
73 The Incredible Adventures of Van Helsing $7.50 (50% off)
Sword of the Stars: The Pit Gold Edition $1.29 (90% off)
Poker Night 2 $0.99 (80% off)
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GameFly
87 Lego Star Wars: The Complete Saga $6.59 (67% off)
80 King's Bounty Platinum Edition $24.99 (50% off)
20% off select titles via "MAY20OFF"
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Green Man Gaming
88 Complete GTA Bundle $9.99 (80% off -- includes GTA IV)
84 Max Payne Complete $10.99 (80% off -- includes MP3)
Up to 80% off Rockstar titles
20% off select titles via "FUSWJT-B1DU64-JBV8UY"
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GOG
Up to 60% off Ubisoft titles