...as most of you probably know by now.
But just in case, for those who don't:
They've got some pretty decent offers on adventure games and several other genres (http://www.gog.com/games##sort=bestselling&price=discounted&page=1).
The offer ends on Monday 9:59AM GMT.
Just got meself 'The Last Express' and the complete 'Quest for Glory' series for roughly 4 â,¬.