Everyone likes a good discount, but nothing beats a 100-per cent markdown. Each week, for those who don’t know, the Epic Games Store gives out a free game, no strings attached. All you need is an Epic Games Store account. (OK, fine, so maybe there’s one string.) During the current Mega Sale—a month-long event in which the sticker price of many popular games has been slashed by as much as 75 per cent—the games in question have been some true heavy-hitters. Last week, it was Grand Theft Auto V. This week, it’s Sid Meier’s Civilisation VI.