You can buy health upgrades even when you have no gold, making your gold just go negative.
I like this; it's a very charming version of minesweeper. However, when it started a new game after finishing an 18x18 level, I started inside a bush and when I tried to move the game crashed.
I'm going to finish a project that I started for Procjam, but ran out of time on. It's a tool to randomly generate a language.