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. Many game elements are adjustable, such as object moving speed and color mode (high contrast, brightness, grayscale, B&W, inversed display...etc).

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 versions have 5 difficulty levels based on the value range of the correct answer.

In this game, you need to find the number corresponding to the percentage of the given value, which is generated randomly and is ranging from 200 all the way to 1000. You click on the correct answer in order to proceed to the next levels.