This is an action packed math game with levels of fun and excitement. Having accessibility in mind, special display and control features are available for low vision gamers. Simple but challenging gameplay, with mobile touch screen support, the games can be played on mobile devices as well as on desktop computers. The math questions are specifically made for elementary and intermediate learners. Player clicks or touches on the correct answer to a math question in order to allow HarryRabby to land safely and proceed to the next level. The math questions are generated randomly. The full version has 5 difficulty levels based on value of the correct answers: value within 10, value within 20, value within 30, value within 40, and value within 50. This free version has just one level for you to start with. This game provides 3-Digit numbers addition and subtraction questions. Many game elements are adjustable, such as object moving speed and color mode (high contrast, brightness, grayscale, B&W, inversed display…etc).