With Halloween less than a week away, October 31st is this Saturday. In case you don't have a calendar handy, GOG has launched a week-long sale, offering up to 91 percent off more than 850 games.

Why 91 percent? Perhaps GOG wants to buy them cheaper than everyone else. Either way, the sale is broken down into categories: Tricks (spooky games), Treats (cute games), Scariest Discounts, and Ghostly Indies. There are also plenty of familiar Halloween games, so let's look at some games that have gone unnoticed in recent years:

There is much more to see than these - there are over 850 games, remember - and if you want to play in the cute category, etc. GOG's Halloween sale runs through November 2.

The Epic Games Store and Humble Store are also currently running Halloween sales, and Steam's Halloween sale will begin later this week.