https://www.pcgamer.com/absolver-is-free-to-play-for-the-weekend-on-steam/

Absolver is an online RPG-action game, released last year, about martial artists named Prospects wandering the fictional world of Adal in an endless quest to prove their worthiness by beating each other up. It's currently on sale on Steam for half-price—that's $15/£12.50/€15—and even better, it's free to play for the weekend. 

Despite being a bit of a tough nut to crack, we liked Absolver quite a bit: Tyler said in his 78/100 review that "a great customizable fighting system and a cooperative spirit fill the empty spaces in a bleak open world."