Just reading through the previous comments about the 4k verison and I was like ohh thats cool and then tried to remember which one it was and all of a sudden… “OHH THAT ONE!!” came to my mind.
Really great to see a game progress like that, downloading now.
Thanks 
@nerb: thanks a lot for trying it out and giving me feedback, much appreciated. Randomized levels are on my wish list, but will take some work to get right. I’ll probably also release a PC version at some point. However, I’m currently close to a family extension, so I do not have as much time for game development as I would like. 
I’m currently working on a seperate gui layout for HD screens (currently buttons are too small on high-density screens), some graphics improvements, gameplay hints and a bit more information, and improvements to the missions / mission selection.