The next free game from the Epic Games Store is Evoland Legendary Edition. You can assign the game to your account forever until 5pm on October 27, 2022.
Evoland Legendary Edition is a bundle of two games: Evoland: A Short Story of Adventure Video Games Evolution and Evoland II: A Slight Case of Spacetime Continuum Disorder. Both games are single-player RPG adventures. Both games hide many references to classic games.