mBlock is a graphical programming tool for making and learning for Kids. Apart from creating interactive art or games, mBlock also enables kids to write program for robots and upload them to Arduino based boards. The preview version of mBlock app is now available for download from Windows Store. If you want the stable version of this app, you can download it from their site directly.
Download it here from Windows Store. Please note that this app works only with x86-based Windows 10 devices.