Too bad it was so short. I started getting the hang of manipulating the mechanics and it was done. I kept thinking i was getting a game over but it was just the level advancing or the game ending from completion. You should probably add transitions to these events / moments~ like your Start game transitions into the scene and into the first level are nicely done. Very smooth. Your introductions to the mechanics are nicely blended into the game.
I like that I could go behind the buildings and they became transparent, this was a nice visual implement. Though, the enemies are able to walk through these objects instead of around and or behind them. They walk over the graphic and any collider that may be in place to block or redirect them.
I like that there are multiple input options to engage with the mechanics which greatly helps against multiple enemy encounters with the game when you are unable to draw the lines with the mouse drag.
Commander Zap's design is great!!
I would have definitely continued playing this if there was more to it. I was bummed out it ended so quickly right when it picked up. I feel people would like to come back and play more if and when it becomes available.