It is free and very fun to play. Come help ometrix Ben 10 race as fast as you can and destroy alien cars by collecting power-ups and shoot towards enemies car. available characters: -Four Arms - Way Big - Diamondhead - XLR8 more will be added soon ben 10 hill car racing alien boy is a racing game and vehicle racing and speed game that you can play for free on DooDoo.Love. This HTML5 game and free online game and instant play offers easy to learn and relaxing game and hard to master. Play now and see why ben 10 hill car racing alien boy is one of the most popular games on DooDoo.Love!