Universal Defender

I just try to do something. 
Sorry - only keyboard and mouse)

You can play here or download version for Win.
На itch.io не даёт сохранится, но на netlify версия с рабочим сохранением:
https://enchanting-liger-2ea575.netlify.app/

Or even look at the code on Git:

https://github.com/Mikkidu/Universe-Defender