Primary IDE for Unity and Unreal. Microsoft has been extending beyond Microsoft platforms, so I imagine a decent chunk of Visual Studio use is for cross-platform development.
It's probably the best C++ IDE out there, with a great debugger. For C# a lot of people prefer Rider, but in terms of free options VS is much better than VS Code.
AFAIK it's also the primary IDE for Sony and Nintendo SDKs
I'm guessing it's still the IDE of choice of game devs.