I have just uploaded a game I have done along my wife with Kotlin 1.1 and my just released KorGE 0.10.0:
Here it is:
http://samples.korge.soywiz.com/coffee/
Also, it is OSS:
github.com/soywiz/korge-samples/tree/master/korge-coffee
It should work in desktop and mobile with modern browsers. I will upload it to Android/iOS stores soon.
Have a nice Kotlin!