What horse breeding games are there

HuntAndJump is a genetics, showing and stable management game geared towards teens and adults. It uses real color genetics, so you'll probably end up learning a lot!
Everything is at a relaxed pace and you can go days, weeks, months, etc. without logging in and everything will be just fine. You don't have to bother with feeding and training. You can tack up your horses and new tack items are always being added. You can manage a barn with hundreds of horses and not feel overwhelmed at all.
The forum is full of helpful people, too!
Signing up takes 30 and you'll be hooked!