edited: Neogaf is better than me in making better looking sales:
Updating at the moment, double check prices before buying. I'll update throughout the day.
Everything is listed in USD. Check your region for local prices.
DOTW
A.R.E.S. Extinction Agenda EX - 7.50$ (600msp) (was 15$)
Girl Fight - 5$ (400msp) (was 10$)
Pool Nation - 5$ (400msp) (was 10$)
Mars: War Logs - 5$ (400msp) (was 10$)
Moon Diver - 3.74$ (300msp) (was 15$)
The Bridge - 5$ (400msp) (was 10$)
Beautiful Katamari - 10$ (800msp) (was 20$)
El Shaddai: Ascension of the Metatron - 5$ (400msp) (was 20$)
Eternal Sonata - 3.74$ (300msp) (was 15$)
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Young Justice - 30$ (2400msp) (was 40$)
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Arc System Works 25th Anniversary sale (Japan only. Sales will be available til early January)
Guilty Gear XX Acore plus - 750¥
Battle Fantasia - 1470¥
Blazblue Calamity Trigger - 570¥
Blazblue Continuum Shift Extend - 1620¥
Guilty Gear 2: Overture - 882¥
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Countdown to 2014: One day sale (24th December)
Feeding Frenzy 1 - 1$ (80msp) (was 5$)
Feeding Frenzy 2 - 1$ (80msp) (was 10$)
Peggle - 1$ (80msp) (was 10$)
--Peggle Nights - 1$ (80msp) (was 5$)
Plants Vs. Zombies - 1.50$ (120msp) (was 15$)
Zuma's Revenge! - 1$ (80msp) (was 10$)
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Countdown to 2014: Week long sale (24th - 31st December)
Brothers: A Tale of Two Sons - 5$ (400msp) (was 15$)
Charlie Murder - 3.29$ (~260msp) (was 10$)
Counter-Strike: Global Offensive - 5$ (400msp) (was 15$)
Deadlight - 3.74$ (300msp) (was 15$)
DuckTales: Remastered - 7.50$ (600msp) (was 15$)
Flashback - 3.29$ (~260msp) (was 10$)
Foul Play - 7.50$ (600msp) (was 15$)
Frogger - 2.50$ (200msp) (was 5$)
Gotham City Impostors - 3.74$ (300msp) (was 15$)
I Am Alive - 3.74$ (300msp) (was 15$)
Orc Attack: Flatulent Rebellion - 5$ (400msp) (was 10$)
Teenage Mutant Ninja Turtles: Out of the Shadows - 7.50$ (600msp) (was 15$)
The Wolf Among Us: Episode 1 - free (was 5$)
Bully Scholarship Edition - 3.74$ (300msp) (was 15$)
Civilization Revolution - 7.50$ (600msp) (was 30$)
Diablo 3 - 40.19$ (~3200msp) (was 60$)
Fight Night Champion - 5$ (400msp) (was 20$)
GTA 5 - 40.19$ (~3200msp) (was 60$)
Hitman: Absolution - 8$ - (640msp) (was 20$)
Kane and Lynch: Dead Men - 5$ (400msp) (was 20$)
Madden NFL 25 - 30$ (2400msp) (was 60$)
Midnight Club: LA - 3.74$ (300msp) (was 15$)
Mini Ninjas - 5$ (400msp) (was 20$)
NCAA Football 14 - 15$ (1200msp) (was 60$)
SSX - 5$ (400msp) (was 20$)
Turbo: Super Stunt Squad - 15$ (1200msp) (was 30$)
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Games with gold bits, (Expires at the end of the month)
Shoot Many Robots - free (was 10$)