I always go manic when the end of November comes and all these wonderful 'Schwarzer Freitag' sales appear.
Some examples (prices in AU dollars):
Battlefield 4 Premium Ed $20
Dragon Age Inquisition $22.50 (enjoy the Denuvo DRM)
Battlefield Hardline Std ED $16
Titanfall Deluxe $10
Need for Speed Most Wanted $5
The Saboteur $2.50