A new version 1.3.2 was released which supports High DPI screens and scale game interface according system settings.
https://app.zdechov.net/c-evoOne interesting thing about this is that C-evo as a game is pretty big project and it has a lots of hard coded user interface dimension constants so it was not as simple as scaling those constants with some scale function or LCL scaling. So I had to use different approach and I have developed scaling layer between the game and LCL called DpiControls
https://app.zdechov.net/c-evo/browser/trunk/Packages/DpiControls . Thanks to that layer which contains many components like TButton, TPanel, TEdit, TForm, etc., it is possible to keep hardcoded constants and use them as points instead of pixels. With some additional bitmap handling to make precise graphics drawing, it is now possible to simply scale the game according either system settings or according to custom set DPI. So that would be another approach to add High DPI support for existing app.