Very cool. Loved the art style and sound. I like that each building has different mechanisms in addition to the color combos. I did once get to the end with enough power but it did not let me finish until I looped around a bit more, not sure why.
Thanks for playing and for your feedback! If I had to guess, you powered up a church which makes the next 3 buildings (including the reactor) cost double. Powering on enough other buildings would cause that effect to wear off. Glad you were able to finish it :)