I've beaten all the levels! As one sage of Mount Ju once said *Thank you so much for including a windowed version*. The best thing I like about your game that it has different solutions, it's always fun to figure out how to beat a game non-intended way. Although, the lack of music is a little bit disheartening, a lil techno would shoot the vibe of the game to the singularity age. The art is simple and well-done, symmetrical just like a solution to one of the levels.
Also, the game definetely needs more mechanics or utilize the old ones more. The idea of upgradeable turrets? Me very likey, but it's only essential in a few levels. The puzzles are fair and engaging, as a person who would dash right to a manual as a child everytime he discovered that to progress further he hard to solve some mystical push boxes there, pull a lever there... they were pretty fun! Though you still had given me a few hints to facilitate the process:). Good job, the grand maestro of reviews Mariothedog!