Hi, the puzzle concept and the level design is extremely great! Super addicting.
But the way to place walls is annoying. It would be easier if clicking a square would toggle between wall and no wall. Then you would not need to constantly switch between "place" and "delete" tool.
And, the scrolling is annoying and unnecessary. Most maps would fit on one screen. They don't center correctly at the start of a level, so you have to switch to keyboard to scroll every time, which is annoying when using mouse.
But the concept is *great*!!