I made a recent "fail" when I played a bit with my aliens. I married a male alien to a nice female, made by the game. It was fun to have them making a baby, and I wanted a girl. So far so good. But when the mother came back from hospital, the game went totally uncontroable. Both parents werre abducted by alien ships.
https://i.imgur.com/vmSP050.jpg
Luckily I had a guest inside the house to take care of the newborn. Game screaming: the baby is hungry!!!
https://i.imgur.com/Jg4UIgZ.jpg
The parents were dropped down again, first the mother.
https://i.imgur.com/Xd4ojhC.jpg
And a little later the father.
https://i.imgur.com/4EukRDY.jpg
What the f........??
https://i.imgur.com/T0s6BKe.jpg
Sure enough, he was pregnant and gave birth to a "twin" boy.
https://i.imgur.com/DQHOc5K.jpg
It is very rare that the game takes my breath away, but this time it succeeded to do so.