Hunter Allis, 13, developed mobile game Planet SCRAM with mobile app developer Bottle Rocket thanks to the Make-A-Wish Foundation.

Like many 13-year-old boys, Hunter Allis loves video games. His dream is to create them.

Allis also suffers from a rare congenital heart disease called hypoplastic left heart syndrome. The left side of his heart is unable to effectively pump blood to his body.

Thanks to the Make-A-Wish Foundation and mobile app developer Bottle Rocket, Allis got the chance to live out his dream. He created a game called Planet SRAM that made it to Apple's App Store.

In Planet SRAM, which was released on Monday, characters fight against giant tree creatures that shoot snakes out of their head, as well as other types of monsters. Players explore the world while shooting at opponents who are attacking them.