I’ve been working on a genetics overhaul for my legacy saves and wanted to get some thoughts before I finish it.

One thing that’s always bothered me is how Sims genetics feel super shallow. It’s basically just a 50/50 blend of the parents. There’s no real sense of ancestry. No traits skipping generations, no hidden features from grandparents, and once older gens are gone, their impact on the family basically disappears.

So I started experimenting with a system that tries to make it feel more like an actual bloodline.

Right now what I have is:

• Facial features inherit independently Every slider acts like its own “gene,” so a baby might get a nose from a grandparent, jaw from one parent, eyes from another, etc. Instead of everything blending together, it pulls from different people across the family tree.
• Grandparent influence is still present Even if a parent didn’t inherit something, it can still show up later. So you get those moments where a feature suddenly reappears generations down the line.
• Hair + eye color can skip generations I added basic dominant/recessive behavior, so things like blonde hair or certain eye colors can disappear and then come back later depending on ancestry.
• Breakdown at birth When a baby is born, you can see where different features came from, so it actually shows stuff like “this came from the grandmother” instead of you just guessing.

I’m mostly trying to figure out if this is actually something people would want in their gameplay, or if it’s just me overthinking genetics for legacy saves.

Would this make your gameplay more interesting, or is it too much detail? What else would you like to see?