So....may be close to wrapping up where I wanted to go with Skyrim; I finished all the main quests and (I think) other than the mask quest, I only have to kill a legendary dragon to 100% the game (already got platinum on the base game).
Any recommendations for xBox One-exclusive games in vein of Prey or Deus Ex?
Exclusive not, but maybe these games are worth to check out that are playable on the One:
Dishonored 2 First person stealth action title, partially by the studio behind Prey. Consist of a series of large scale maps with a lot of ways to interact with.
Resident Evil VII First person action horror, with a good amount of exploring/puzzling/sneaking around. Intricate levels to explore (in particular the family house/mansion early on) and eventually plenty of action when you get your guns.
Alien Isolation First person survival horror, like Prey it takes place on a space station/colony gone wrong. This is not as much an action game but a thinking mans survival experience. There is combat, but it more focused on sneaking and utilizing your tools to survive).
Control Third person action with super natural powers, takes place in a mysterious paranormal FBI headquarters-esque setting where things went wrong, a building you get to explore.
Not exactly Prey or Deus Ex, but I do think these titles share DNA.