Fantasy games take you away from any semblance of the real world, instead trading in unique worlds and universes, often featuring magic, but sometimes lean into fantasy technology as well. These games are often in the RPG genre, and many of them feature open-worlds as well. The most important and defining aspect of fantasy games are their settings though, featuring magical creatures and special powers.
Assassin's Creed Mirage trades expansive RPG mechanics for a straightforward action experience, focusing on stealth gameplay set in 9th-century Baghdad, completing in around a dozen hours.
"Mortal Shell II is a standalone sequel to Mortal Shell that significantly expands on the original with unrestricted, adrenaline-charged combat, deeper weapon design with extensive upgrade options, and an emphasis on free exploration."