No offense, but I really couldn't figure out what the point of this was. It was just a single place where you did tricks. There's nothing noteworthy about that. I think the graphics also aren't that good. At least it was easy to die. It just needs to be longer.
In order for a game to work, it needs to be unique. While there aren't that many games like this, it still has not much going on. It's too generic. I'm not familiar or in any way interested with BMX. Maybe people who will enjoy this more.