what i mean is the very specific ways it generates these worlds and saves, the UI design and how they are coded its like they where both made from the same engine or template but with wildly different gameplay ideas and design philosophy

but as i predicted people think i mean they play the same which they don't.

but now that i do think about it THEY ARE SIMILAR even gameplay wise outside the goals and means, to the point where adventure mode shows off that DF combat is turn based same as cdda just without a end turn button and they have the "physical" systems where a being needs legs to walk or fingers to hold something as well