While this course can be audited for free by anyone, a Verified Certificate is available for those that complete it for $199.
A popular area of these online courses is the CS50 series, which covers computer science topics. This coursework is targeted to AP high school students in this area. It includes about 30 courses, such as the “CS50's Introduction to Game Development,” an intermediate course that covers “The development of 2D and 3D interactive video games.” The course is in English, and is designed to be completed over a 12 week period, for 6 to 9 hours weekly, although it is self-paced to accommodate other learning paces. While this course can be audited for free by anyone, a Verified Certificate is available for those that complete it for $199.