Pixel Dungeon and hence shattered pixel Dungeon are both based on a totally open sourced computer game called Brogue or BrogueCE (Community Edition) nowadays
It’s not on steam, its just free on the web. Anyone who likes pixel dungeon should check it out
I have a lot of kids so I can’t answer that question
but reddit asked it 2 days ago, word for word https://www.reddit.com/r/AskReddit/comments/1gdm2wj/people_in_their_40s_and_50s_with_no_children_how/
I just think it’s interesting to look at the difference in the user replies