hehe, I put a lot of effort into designing constellations for each Marcus! You can see them all from the outside once you've defeated every one. I'm not sure if you caught them all, but I'm glad you noticed the easter egg!
Oh, hmm, I had actually restarted and was sitting at a menu when I saw the "look at the sky!" suggestion. I hadn't even gone inside yet, but they each appeared when I looked up then back down. Hmmm. (Maybe it was re-using state from a previous run in the same process?)
