Kotlin vs Java – Which is better for Android game app development?

Hi all,
Recently I've read the blog on Kotlin vs Java, and after the comparison, I realize that Kotlin is the best choice(As it is Google's preferred language for android app development) for normal Android app development. But still, I've query in my mind that is it better for Android game app development or should continue with Java? Please share your inputs.

If you plan on using a gaming engine / SDK such as Unity, Unreal, Corona, etc., especially cross-platform engines, Kotlin and Java may not even be options.  The primary programming language for many of them is C++/C#; some use scripting languages like Javascript/Lua.