Day 4 of the Steam Summer Sale, 2012. New games are put up for sale every day.
Today's discounted games:
-Serious Sam 3 for $9.99 (75% off)
-Mount and Blade for $2.49 (75% off)
-The Darkness II for $12.49 (75% off)
-Trine 2 for $3.74 (75% off)
-Cities XL 2012 for $9.99 (75% off)
-The Walking Dead for $14.99 (40% off)
-Hitman Collection for $2.49 (75% off)
-Saints Row: The Third for $12.49 (75% off)
Personally, I recommend getting Saints Row the Third (for me, it felt like a GTA game that lacked the repetitiveness). I've also heard good things about the Serious Sam and Hitman series, but I haven't played them yet.