Sony's Gravity Rush is one of the PS Vita's most interesting titles. But like most games, it wasn't made overnight. These things take time!
Above is a 2008 concept trailer from when the game was called Gravité.
I love looking at concept trailers to see how the final product stacks up. Sometimes the games end up worse, and sometimes better. They're just "concepts"—an idea of what the actual game will eventually become.