Thanks for the feedback! I definetly need to make it clearer what upgrade is selected. And I also did’nt even know Enter could be used! I’m still new to Godot UI nodes so it’s kind of weird for me.
I’ve been able to click on all upgrades and see the effect, but maybe because I grew used to it, will look into the matter, thank you very much!
And yes font is a problem, I was going to include a font switch option but oh well, time ^^U