One of the newest and most popular free iPhone game downloads is KartRider Rush. The game already has over two hundred million users. It started out as an online racing game based out of the Asian continent and has now been turned into a fun and addictive mobile app. The game includes two different game play modes each with a variety of features. The first mode, Item Mode allows players to attack other players with a variety of items in the search and race for the gold. The other mode, speed mode, players try to drift in order to gain nitro to speed up their racing capabilities. The program runs the best on iPhone 4 but is also has run successfully on the 3GS version. The game was uploaded to the app store at the beginning of march and has already made it to the top twenty five free download list.