Code Hunt is an educational, browser-based coding game targeting teachers and students from introductory to advanced programming or software engineering courses. At the core of the game experience is an automated grading engine based on symbolic execution. If you have never played Code Hunt before, we suggest you first visit the Instructions page or play the tutorial level to get a better understanding of the game platform and mechanics. Found a bug? Have a question? Want to provide feedback? Please contact our developers at firstname.lastname@example.org. Go to our Microsoft Research page to find a list of publications around Code Hunt. Code Hunt was developed by the Research in Software Engineering (RiSE) group at Microsoft Research.