Residing in the top 10 of US Racing Game downloads is Alpine Crawler World HD. This isn’t your traditional racing game as you are pitted against the course itself rather than against other drivers on your iPad. That said, there’s a great leader board to access using your internet connection where you can rank your progress against other drivers. Alpine Crawler World HD first appeared on the iPhone but it’s found its real home on the iPad with its larger screen estate. This is a fabulous game, well made and extremely addictive.