Today I had a download-spree on my PS3, and while playing Drake's Fortune, I decided to come up with a list of games that gave me inspiration for the kinds of things I want to have in the Project Vex world/experience/game.
Uncharted: Drake's Fortune: This game has absolutely an absolutely stunning, amazingly beautiful environment. From the first step in the game, I thought: "This... this is how Project Vex's world needs to look and feel." The splash effects on the water are the only thing I felt needed improvement. When I begin development for Project Vex, this will be the quality of environment I will be aiming for.
Prince of Persia: The illustrative art style is very beautiful in this game, but what inspires me in regards to Project Vex is the battle system. Mind you, Prince of Persia's system is very epic, and Project Vex shall be a little more down to earth, but the smooth, natural animation, and the overall ability to move in the world is something I would like to do similarly for Project Vex.
I will update this as I encounter similar games that inspire me (or serve as great examples for what I am aiming for in Project Vex).