As a general rule, I'm a hug fan of free-falling/free-running games, which explains my love for the Jumping Flash franchise and Mirror's Edge, so this was right up my alley. While it made a decent splash on PC, thankfully the game eventually came to iOS and broadened its audience for $3. Now you can have it for a buck.
If the game hooks you in, think about getting the original, and the self described semi-sequel on PC. You won't regret it!