If you already have Anomaly Warzone Earth, you get 20% off the preorder of the second part. Moreover, you get 2 copies which makes 1 copy costs only 5,6 euros.
Ohh, it's a Steam deal but they might have the same at other shops too.
Looks like the 2 for 1 deal is over, now that it's released. Still has the extra 10% off though.