PC game registration
As of the June 2022 GDK, the need to register your game for most scenarios has been removed. If you wish to ensure your icons show up correctly for start menu and desktop tiles (or wish to use these to launch your game), you may do so by explicitly registering using wdapp.exe register.
See also
Command-line tools for PC
Utilizing Microsoft Game Development Kit (GDK) tools to install and launch your PC title
PC game development (environment and tools)
PC Bootstrapper