If you are subscribed to the Xbox Live Marketplace (please forgive me if I make any mistakes, I’m clueless on the Xbox platform), then you can pick up a demo of MySims SkyHeroes. It appears to be free for Gold members, not sure what it is for others. The file size for the demo is 261MB.
MySims SkyHeroes brings the thrill and high speed action of flying to the creative, immersive world of MySims. Go from unknown pilot to celebrated hero as you defeat dangerous enemies in aerial dogfights, test your reflexes in fast-paced speed challenges, and take on massive bosses. Team up for split-screen action or in 10-player online matches.