Stardock's digital distribution platform, Impulse, is having its weekend sale, starting with a sale on THQ Ultimate Bundle (17 titles for $99.99), knocking 50% off Eschalon Book I and Eschalon Book II, Air Aces - Pacific, Numen: Contest of Heroes, Dark Void, Machinarium, The Witcher: Enhanced Edition Director's Cut, while also dropping the price on Gratuitous Space Battles Complete, Rise of the Triad, Blake Stone: Aliens of Gold, Blake Stone: Planet Strike, Duke Nukem 3D, Duke Nukem Manhattan Project, and World War 2 - Time of Wrath.