The Epic Games Store has a little Halloween treat for you, with both dress ’em up RPG Costume Quest and grim depths survival game Soma free for the next week. If you’re going to grab a freebie for your kiddy-winks, I urge you to be very careful with your clicks or prepare for some long nights ahead. Epic also just announced a few new additions to their storefront, so let’s take a look at that as well.