Stardock's digital distribution platform, Impulse, is having its weekend sale, knocking 50% off the regular price on Demigod, Tropico Reloaded, and Hacker Evolution, as well as dropping the price on a slew of titles like Sacraboar, DeskScapes 3, Titan Quest, Nemesis of the Roman Empire, Warlords Battlecry III, Capitalism II, and Immortal Cities: Children of the Nile.