The Epic Games Store has three completely free games for you to grab and play to your hearts content, the offers run out on the 9th January 2020. They are Darksiders Warmastered Edition, Darksiders 2 Deathinitive Edition, and Steep.
The Darksiders games have a metacritic score of 77 and 81 respectively, and have been out for a while but still are fantastic games. The game was created by THQ who planned a four part series but only got through two games before unfortunately going bankrupt. A new company purchased alot of the THQ content and branding and renamed themselves THQ Nordic who have brought back the Darksider games and revitalising them into the Warmastered edition and Deathinitive editions we have today. If you want a Zelda-lite dungeon action game then download these two on the Epic Games store for free before the 9th January before the offer expires!
Another game that's free currently is a game called Steep, which got a score of 72 on metacritic. It's a snowboarding, skiing, snow gliding, paragliding game where you take your person and go and do some extreme sports in some difficult and dangerous snowy places. If you're into that sort of thing give it a go, if you're not, it's free to try it out anyway!