You can also code pure ActionScript applications, which was how most video games were made.
You can either build Flex applications using the Adobe Flex framework and take advantage of its collection of stylable Graphical User Interface, data manipulation, and networking components.
Initially created for viewing multimedia content, executing internet applications (including games), and streaming audio and video content. that was definitely discontinued in 2020 mainly for security vulnerabilities reasons. Adobe Flash Player is a freeware computer program developed by Adobe Inc.