Hit Hit Boom version 1.0.0 has been released and available now in Finland and Germany! The limited availability was the only option, because there was clearly too little information available about the difficulty settings and the impact of those crazy light effects on players. If everything goes fine, new countries will be added gradually. If you want to get access immediately, I can add some specific country to the high priority queue based on your requests.
Google play download can be found here: Link
Thanks every for help this far - keep on booming!