And I agree with you -- it is, imo, the most beautiful roguelike that I've seen or played. And it's got hundreds of unique sound effects, too, which makes a huge difference.
I've thought about CDDA, but honestly, the amount of material there is intimidating. But it looks very cool.
These games are indeed dangerous! I don't have kids, but I'm still in school, so I have to be careful. When you have some time, definitely give Cogmind a try. Hope you enjoy it!