Please change the red/green colors on the row numbers, it's difficult for colorblind people. I didn't even realize it was changing colors from green to red when I had too many dots.
In general, though, a fun game and looks very polished!
In general, though, a fun game and looks very polished!
While it might work for some people, I'd suggest to redesign. Don't convey information with color alone. For example, you could switch the boldness, circle the number, or something else. The goal is to make it playable even if my goal setting is set to grayscale mode.
Once you do this, you may be able to get rid of the colorblind setting.
So 0 would tell me the line is complete. A negative number would show there's an error and I need to remove a piece.