I don’t think i quite understood the game-idea here. Is there any reason not to put the mous at the very edge of the board and wait for the percentage bar to reach 0%?
I could not figure out any advantage of first adding some liquid somewhere else, even challenging mode would just mean you need to find the single spot that just so happens to create the fastest way to the edge, i did not look to me like there was a way to figure that out by logic, just trying what looks est.
Did you maybe intend to introduce a mechanic, where you first have to use some water to activate a lever for example, and only after you did so you can start pouring your water to the edge? I think something along those lines is missing.