Dolmen is a terrifying new action RPG that combines futuristic Sci-Fi and Cosmic Horror elements. Dolmen casts players onto a hostile alien world known as Revion Prime. Your job? Bring back samples of a crystal with particularly unique properties; the so-called ""Dolmen"" . These crystals are capable of allowing interaction between realities, revolutionizing space exploration and changing the known world forever.

Daily Video Game writes: "Right now, Xbox Store is running a new digital game sale titled "Publisher Spotlight Series" sale that offers huge discounts on various popular games and bundles for Xbox Series X/S and Xbox One gamers!"
That is a steal for Kingdom Come: Royal Edition. One of the most interesting action RPGs to come out in a long time.
Personal recommendations are
The Metro series
Hunt Showdown (though I'm not sure what the player count for the game looks like on Xbox)
Wasteland 3: Calorado Edition (if you don't have Gamepass. The extra content is really worth it).
Especially at those prices.

"Almost a year after Dolmen was announced at a Koch Media preview event, it is finally here. I’ve been anticipating this since I saw it and now I finally get to play it." Brian @ Thumb Culture

XBA says: Another Soulslike, albeit with a sci-fi backdrop and some unique ideas.