Portal 2: it's about the family

Think about it.
The main character is an orphan. Glados serves as her evil stepmother. Her dad is Wheatley. He's super dumb and clumsy. Uh, oh, look out when he takes over the house!

The mother/father conflict is expressed many ways throughout the game. In many pivotal scenes, both robots are urging you to do opposing things. But you really have only one thing you can do.

Turrets: defective turrets have a male voice, good turrets have a female one.

Portal2 is such a great game. There are levels of depth and complexity that really are there.