If you can get pass the main menu that means the game captures the mouse input okay.
You need to aim a the hex characters and a rectangle cursor should appear, then holding left should play a mining animation.
If that doesn't work, I don't really know whats going on. Can you interact with the shop at the top?
The shop doesn't seem to allow me to highlight or press anything, which is really weird!
I'd mess about with the resolution, but the game keeps resetting its own resolution (which imo it shouldn't be doing) when I try to adjust it or fullscreen it. The menu's mouse support also seems to be oddly sluggish, although that might be a matter of how I'm running it
