The next game that is going free to download is Super Meat Boy, a tough as nails platformer where you play as a boy without skin who needs to save his girlfriend made of bandages from an evil fetus in a jar wearing a top hat and a monocle. Super Meat Boy is free from 28 December 2018 to 10 January 2019.
Source: N4G PC Epic Games Store's final free game for 2018 is Super Meat Boy