Mummelmann on 22 July 2013
Dungeon Siege
Rogue Legacy
Orcs Must Die 2
Gothic 2 Gold
Worms Ultimate Pack (all the Worms games with expansions and DLC)
Stronghold Pack
Half-Life Collection (Original, Opposing Force, Blue Shift, Team Fortress 1)
In addition, they had some good deals on GOG as well, I got;
King of Dragon Pass (so different and refreshing!)
Nox
Tzar: Burden of the Crown
Good times with summer sales! 
