Fun enough, and the leaderboard keeps me wanting to play. The thing that's stopping me, however, is the slightly buggy spawning of the obstacles. Sometimes they will spawn in a way that there is next to no possible way to avoid hitting them upon landing on a new building (unless you time it right to land on the corner, even then...). This is more noticable in the "indoor" parts, where you don't have much of a window to get in, let alone pass the obstacle right there. It's also an issue with the exits of the indoor buildings, where to pass the obstacle, you miss the floor and plummet. Still, fun little game.