If you grew up on the LucasArts side of the adventure game turf wars, you missed out on some really wonderful Sierra stuff -- specifically, the Space Quest series; a consistently funny, wonderfully designed set of sci-fi adventure games.

GOG just happens to have them on sale this weekend for 50% off, so you can get the entire series for ten bucks. Other Sierra adventure game packs are marked down too, including King's Quest and Police Quest. Those are fine, but they lack a certain something. There are no pet facehuggers, for example.