A pretty good game for what it is, but as others have said, not particularly what a desired RTS might feel like (with the emphasis being placed on speed), and there are some balance issues. The gunbot sound is also particularly earsplitting, but there is good background music nonetheless.
I agree with all the top comments here, everything about this game is absolutely brilliant and beautiful. From the graphics (even though they're relatively simple), to the soundtrack, to the ranging complexity of the puzzles which can drive you mad, especially when some puzzles seem like they're so simple at first. Yet you keep finding bugs 50+ cycles in...you fix those, feel great, and then something else comes up a few cycles later...then you finally get everything working, and you feel like the best coder in the world. It's great. As someone with a longtime interest in computer science and coding/programming, I think a debugger would be really nice here, but the added challenge of not having one makes the feeling of finally solving a puzzle that much better. Multiple solutions per puzzle and the "you have to play it for a while to get it" (quote from 19matt's comment) also make it lots of fun to see what the most efficient possible solution is. 5/5 and added to favorites.
The challenge (non-race) maps from the Burnout series + a little bit of Crazy Taxi + EPICALLY AWESOME = Roadkill Revenge. This is legitimately some of the most fun I've had in months. I salute you, sir.
 "Takeover")
 "The Codex of Alchemical Engineering")
 "Roadkill Revenge")