Sorry if this is spammy, but after a few years of dev I finally released my Ninja Turdle 2d platformer on steam. It’s all in Kotlin! Originally I started in Java, but then fell in love with Kotlin and ported the code base to Kotlin and never looked back. Was an amazing experience. I now love Kotlin 100x more than when I started and even use Kotlin for everything at my new startup. :) I plan on posting a couple technical blog posts about my learnings along the way and things I wish I knew earlier on.

That's quite a story! I think we'd all be interested in learning from your experience in those blog posts. Well done!

Did you use LibGDX?