The Westworld staff knows it too. The one man said ~"That guy. He gets whatever he wants." So they are aware of what he is doing and that he is searching for "the maze" but they must not care???
He told Evan Rachel Wood (the first bot), "You and I have been doing this for 30 years".
There's a groundhog day dynamic to this, he's probably "killed" them all multiple times.
The search for a "deeper game" may just be a smokescreen.
At this point I'll shut up, not really a fan of spoiler speculation.