Following the release of Da Orks, a great classic like Warhammer 40,000: Armageddon gets a really nice discount for the duration of the week: 50% off!
If you have never played it then it's your chance. Lead the forces of the Imperium and repel the green tide which wants to swallow Armageddon. For the Emperor!
http://store.steampowered.com/app/312370/